diff --git a/src/osgWrappers/serializers/osg/AnimationPath.cpp b/src/osgWrappers/serializers/osg/AnimationPath.cpp
index f16ee054b..687398d3e 100644
--- a/src/osgWrappers/serializers/osg/AnimationPath.cpp
+++ b/src/osgWrappers/serializers/osg/AnimationPath.cpp
@@ -13,7 +13,7 @@ static bool checkTimeControlPointMap( const osg::AnimationPath& path )
 
 static bool readTimeControlPointMap( osgDB::InputStream& is, osg::AnimationPath& path )
 {
-    unsigned int size = 0; is >> size;
+    unsigned int size = is.readSize();
     if ( size>0 )
     {
         is >> osgDB::BEGIN_BRACKET;
@@ -37,7 +37,7 @@ static bool readTimeControlPointMap( osgDB::InputStream& is, osg::AnimationPath&
 static bool writeTimeControlPointMap( osgDB::OutputStream& os, const osg::AnimationPath& path )
 {
     const osg::AnimationPath::TimeControlPointMap& map = path.getTimeControlPointMap();
-    os << map.size();
+    os.writeSize(map.size());
     if ( map.size()>0 )
     {
         os << osgDB::BEGIN_BRACKET << std::endl;
diff --git a/src/osgWrappers/serializers/osg/Billboard.cpp b/src/osgWrappers/serializers/osg/Billboard.cpp
index 3ed585463..075eccb16 100644
--- a/src/osgWrappers/serializers/osg/Billboard.cpp
+++ b/src/osgWrappers/serializers/osg/Billboard.cpp
@@ -10,7 +10,8 @@ static bool checkPositionList( const osg::Billboard& node )
 
 static bool readPositionList( osgDB::InputStream& is, osg::Billboard& node )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize();
+    is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         osg::Vec3d pos; is >> pos;
@@ -23,7 +24,8 @@ static bool readPositionList( osgDB::InputStream& is, osg::Billboard& node )
 static bool writePositionList( osgDB::OutputStream& os, const osg::Billboard& node )
 {
     const osg::Billboard::PositionList& posList = node.getPositionList();
-    os << posList.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(posList.size());
+    os<< osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::Billboard::PositionList::const_iterator itr=posList.begin();
           itr!=posList.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/Camera.cpp b/src/osgWrappers/serializers/osg/Camera.cpp
index 0fc20d3c8..7dd69aff2 100644
--- a/src/osgWrappers/serializers/osg/Camera.cpp
+++ b/src/osgWrappers/serializers/osg/Camera.cpp
@@ -182,7 +182,7 @@ static bool checkBufferAttachmentMap( const osg::Camera& node )
 
 static bool readBufferAttachmentMap( osgDB::InputStream& is, osg::Camera& node )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         is >> osgDB::PROPERTY("Attachment");
@@ -215,7 +215,7 @@ static bool readBufferAttachmentMap( osgDB::InputStream& is, osg::Camera& node )
 static bool writeBufferAttachmentMap( osgDB::OutputStream& os, const osg::Camera& node )
 {
     const osg::Camera::BufferAttachmentMap& map = node.getBufferAttachmentMap();
-    os << map.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(map.size()); os<< osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::Camera::BufferAttachmentMap::const_iterator itr=map.begin();
           itr!=map.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/ConvexPlanarOccluder.cpp b/src/osgWrappers/serializers/osg/ConvexPlanarOccluder.cpp
index 3546be1d7..f9420bfe9 100644
--- a/src/osgWrappers/serializers/osg/ConvexPlanarOccluder.cpp
+++ b/src/osgWrappers/serializers/osg/ConvexPlanarOccluder.cpp
@@ -5,7 +5,7 @@
 
 static void readConvexPlanarPolygon( osgDB::InputStream& is, osg::ConvexPlanarPolygon& polygon )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         osg::Vec3d vertex; is >> vertex;
@@ -17,7 +17,7 @@ static void readConvexPlanarPolygon( osgDB::InputStream& is, osg::ConvexPlanarPo
 static void writeConvexPlanarPolygon( osgDB::OutputStream& os, const osg::ConvexPlanarPolygon& polygon )
 {
     const osg::ConvexPlanarPolygon::VertexList& vertices = polygon.getVertexList();
-    os << vertices.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(vertices.size()); os<< osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::ConvexPlanarPolygon::VertexList::const_iterator itr=vertices.begin();
           itr!=vertices.end(); ++itr )
     {
@@ -54,7 +54,7 @@ static bool checkHoles( const osg::ConvexPlanarOccluder& obj )
 
 static bool readHoles( osgDB::InputStream& is, osg::ConvexPlanarOccluder& obj )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         osg::ConvexPlanarPolygon polygon;
@@ -69,7 +69,7 @@ static bool readHoles( osgDB::InputStream& is, osg::ConvexPlanarOccluder& obj )
 static bool writeHoles( osgDB::OutputStream& os, const osg::ConvexPlanarOccluder& obj )
 {
     const osg::ConvexPlanarOccluder::HoleList& holes = obj.getHoleList();
-    os << holes.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(holes.size()); os<< osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::ConvexPlanarOccluder::HoleList::const_iterator itr=holes.begin();
           itr!=holes.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/FragmentProgram.cpp b/src/osgWrappers/serializers/osg/FragmentProgram.cpp
index c142c4b6d..99f40ce5e 100644
--- a/src/osgWrappers/serializers/osg/FragmentProgram.cpp
+++ b/src/osgWrappers/serializers/osg/FragmentProgram.cpp
@@ -11,7 +11,7 @@ static bool checkLocalParameters( const osg::FragmentProgram& fp )
 
 static bool readLocalParameters( osgDB::InputStream& is, osg::FragmentProgram& fp )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         GLuint key; osg::Vec4d value;
@@ -25,7 +25,7 @@ static bool readLocalParameters( osgDB::InputStream& is, osg::FragmentProgram& f
 static bool writeLocalParameters( osgDB::OutputStream& os, const osg::FragmentProgram& fp )
 {
     const osg::FragmentProgram::LocalParamList& params = fp.getLocalParameters();
-    os << params.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(params.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::FragmentProgram::LocalParamList::const_iterator itr=params.begin();
           itr!=params.end(); ++itr )
     {
@@ -43,7 +43,7 @@ static bool checkMatrices( const osg::FragmentProgram& fp )
 
 static bool readMatrices( osgDB::InputStream& is, osg::FragmentProgram& fp )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         unsigned int key; osg::Matrixd value;
@@ -57,7 +57,7 @@ static bool readMatrices( osgDB::InputStream& is, osg::FragmentProgram& fp )
 static bool writeMatrices( osgDB::OutputStream& os, const osg::FragmentProgram& fp )
 {
     const osg::FragmentProgram::MatrixList& matrices = fp.getMatrices();
-    os << matrices.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(matrices.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::FragmentProgram::MatrixList::const_iterator itr=matrices.begin();
           itr!=matrices.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/Geometry.cpp b/src/osgWrappers/serializers/osg/Geometry.cpp
index 48c69361a..eec79942d 100644
--- a/src/osgWrappers/serializers/osg/Geometry.cpp
+++ b/src/osgWrappers/serializers/osg/Geometry.cpp
@@ -73,7 +73,7 @@ ADD_ARRAYDATA_FUNCTIONS( FogCoordData )
     static bool check##PROP( const osg::Geometry& geom ) \
     { return geom.get##LISTNAME().size()>0; } \
     static bool read##PROP( osgDB::InputStream& is, osg::Geometry& geom ) { \
-        unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET; \
+        unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET; \
         for ( unsigned int i=0; i<size; ++i ) { \
             osg::Geometry::ArrayData data; \
             is >> osgDB::PROPERTY("Data") >> osgDB::BEGIN_BRACKET; \
@@ -84,7 +84,7 @@ ADD_ARRAYDATA_FUNCTIONS( FogCoordData )
     } \
     static bool write##PROP( osgDB::OutputStream& os, const osg::Geometry& geom ) { \
         const osg::Geometry::ArrayDataList& LISTNAME = geom.get##LISTNAME(); \
-        os << LISTNAME.size() << osgDB::BEGIN_BRACKET << std::endl; \
+        os.writeSize(LISTNAME.size()); os << osgDB::BEGIN_BRACKET << std::endl; \
         for ( osg::Geometry::ArrayDataList::const_iterator itr=LISTNAME.begin(); \
               itr!=LISTNAME.end(); ++itr ) { \
             os << osgDB::PROPERTY("Data") << osgDB::BEGIN_BRACKET << std::endl; \
diff --git a/src/osgWrappers/serializers/osg/ImageSequence.cpp b/src/osgWrappers/serializers/osg/ImageSequence.cpp
index 0c2c5e0ae..ab7806c7a 100644
--- a/src/osgWrappers/serializers/osg/ImageSequence.cpp
+++ b/src/osgWrappers/serializers/osg/ImageSequence.cpp
@@ -24,7 +24,7 @@ static bool readFileNames( osgDB::InputStream& is, osg::ImageSequence& image )
 static bool writeFileNames( osgDB::OutputStream& os, const osg::ImageSequence& image )
 {
     const osg::ImageSequence::FileNames& files = image.getFileNames();
-    os << files.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(files.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::ImageSequence::FileNames::const_iterator itr=files.begin();
           itr!=files.end(); ++itr )
     {
@@ -43,7 +43,7 @@ static bool checkImages( const osg::ImageSequence& image )
 
 static bool readImages( osgDB::InputStream& is, osg::ImageSequence& image )
 {
-    unsigned int images = 0; is >> images >> osgDB::BEGIN_BRACKET;
+    unsigned int images = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<images; ++i )
     {
         osg::Image* img = dynamic_cast<osg::Image*>( is.readObject() );
@@ -56,7 +56,7 @@ static bool readImages( osgDB::InputStream& is, osg::ImageSequence& image )
 static bool writeImages( osgDB::OutputStream& os, const osg::ImageSequence& image )
 {
     const osg::ImageSequence::Images& images = image.getImages();
-    os << images.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(images.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::ImageSequence::Images::const_iterator itr=images.begin();
           itr!=images.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/LOD.cpp b/src/osgWrappers/serializers/osg/LOD.cpp
index 965358a0d..47b0d10d8 100644
--- a/src/osgWrappers/serializers/osg/LOD.cpp
+++ b/src/osgWrappers/serializers/osg/LOD.cpp
@@ -31,7 +31,7 @@ static bool checkRangeList( const osg::LOD& node )
 
 static bool readRangeList( osgDB::InputStream& is, osg::LOD& node )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         float min, max;
@@ -45,7 +45,7 @@ static bool readRangeList( osgDB::InputStream& is, osg::LOD& node )
 static bool writeRangeList( osgDB::OutputStream& os, const osg::LOD& node )
 {
     const osg::LOD::RangeList& ranges = node.getRangeList();
-    os << ranges.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(ranges.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::LOD::RangeList::const_iterator itr=ranges.begin();
           itr!=ranges.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/Node.cpp b/src/osgWrappers/serializers/osg/Node.cpp
index 53c137b36..718e1052b 100644
--- a/src/osgWrappers/serializers/osg/Node.cpp
+++ b/src/osgWrappers/serializers/osg/Node.cpp
@@ -39,7 +39,7 @@ static bool checkDescriptions( const osg::Node& node )
 
 static bool readDescriptions( osgDB::InputStream& is, osg::Node& node )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         std::string value;
@@ -53,7 +53,7 @@ static bool readDescriptions( osgDB::InputStream& is, osg::Node& node )
 static bool writeDescriptions( osgDB::OutputStream& os, const osg::Node& node )
 {
     const osg::Node::DescriptionList& slist = node.getDescriptions();
-    os << slist.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(slist.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::Node::DescriptionList::const_iterator itr=slist.begin();
           itr!=slist.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/Program.cpp b/src/osgWrappers/serializers/osg/Program.cpp
index 78f35f9b9..45a8afefb 100644
--- a/src/osgWrappers/serializers/osg/Program.cpp
+++ b/src/osgWrappers/serializers/osg/Program.cpp
@@ -7,7 +7,7 @@
     static bool check##PROP(const osg::Program& attr) \
     { return attr.get##TYPE().size()>0; } \
     static bool read##PROP(osgDB::InputStream& is, osg::Program& attr) { \
-        unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET; \
+        unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET; \
         for ( unsigned int i=0; i<size; ++i ) { \
             std::string key; unsigned int value; \
             is >> key >> value; attr.add##DATA(key, value); \
@@ -18,7 +18,7 @@
     static bool write##PROP( osgDB::OutputStream& os, const osg::Program& attr ) \
     { \
         const osg::Program::TYPE& plist = attr.get##TYPE(); \
-        os << plist.size() << osgDB::BEGIN_BRACKET << std::endl; \
+        os.writeSize(plist.size()); os << osgDB::BEGIN_BRACKET << std::endl; \
         for ( osg::Program::TYPE::const_iterator itr=plist.begin(); \
               itr!=plist.end(); ++itr ) { \
             os << itr->first << itr->second << std::endl; \
@@ -55,7 +55,7 @@ static bool checkShaders( const osg::Program& attr )
 
 static bool readShaders( osgDB::InputStream& is, osg::Program& attr )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         osg::Shader* shader = dynamic_cast<osg::Shader*>( is.readObject() );
@@ -68,7 +68,7 @@ static bool readShaders( osgDB::InputStream& is, osg::Program& attr )
 static bool writeShaders( osgDB::OutputStream& os, const osg::Program& attr )
 {
     unsigned int size = attr.getNumShaders();
-    os << size << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(size); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( unsigned int i=0; i<size; ++i )
     {
         os << attr.getShader(i);
diff --git a/src/osgWrappers/serializers/osg/Shader.cpp b/src/osgWrappers/serializers/osg/Shader.cpp
index 2084637f8..c2d182b38 100644
--- a/src/osgWrappers/serializers/osg/Shader.cpp
+++ b/src/osgWrappers/serializers/osg/Shader.cpp
@@ -11,7 +11,7 @@ static bool checkShaderSource( const osg::Shader& shader )
 static bool readShaderSource( osgDB::InputStream& is, osg::Shader& shader )
 {
     std::string code;
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         std::string line;
@@ -33,7 +33,7 @@ static bool writeShaderSource( osgDB::OutputStream& os, const osg::Shader& shade
         lines.push_back( line );
     }
     
-    os << lines.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(lines.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( std::vector<std::string>::const_iterator itr=lines.begin();
           itr!=lines.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/StateSet.cpp b/src/osgWrappers/serializers/osg/StateSet.cpp
index be40343af..60c69eff0 100644
--- a/src/osgWrappers/serializers/osg/StateSet.cpp
+++ b/src/osgWrappers/serializers/osg/StateSet.cpp
@@ -29,7 +29,7 @@ static int readValue( osgDB::InputStream& is )
 
 static void readModes( osgDB::InputStream& is, osg::StateSet::ModeList& modes )
 {
-    unsigned int size = 0; is >> size;
+    unsigned int size = is.readSize();
     if ( size>0 )
     {
         is >> osgDB::BEGIN_BRACKET;
@@ -45,7 +45,7 @@ static void readModes( osgDB::InputStream& is, osg::StateSet::ModeList& modes )
 
 static void readAttributes( osgDB::InputStream& is, osg::StateSet::AttributeList& attrs )
 {
-    unsigned int size = 0; is >> size;
+    unsigned int size = is.readSize();
     if ( size>0 )
     {
         is >> osgDB::BEGIN_BRACKET;
@@ -84,7 +84,7 @@ static void writeValue( osgDB::OutputStream& os, int value )
 
 static void writeModes( osgDB::OutputStream& os, const osg::StateSet::ModeList& modes )
 {
-    os << modes.size();
+    os.writeSize(modes.size());
     if ( modes.size()>0 )
     {
         os << osgDB::BEGIN_BRACKET << std::endl;
@@ -102,7 +102,7 @@ static void writeModes( osgDB::OutputStream& os, const osg::StateSet::ModeList&
 
 static void writeAttributes( osgDB::OutputStream& os, const osg::StateSet::AttributeList& attrs )
 {
-    os << attrs.size();
+    os.writeSize(attrs.size());
     if ( attrs.size()>0 )
     {
         os << osgDB::BEGIN_BRACKET << std::endl;
@@ -173,7 +173,7 @@ static bool checkTextureModeList( const osg::StateSet& ss )
 
 static bool readTextureModeList( osgDB::InputStream& is, osg::StateSet& ss )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     osg::StateSet::ModeList modes;
     for ( unsigned int i=0; i<size; ++i )
     {
@@ -193,7 +193,7 @@ static bool readTextureModeList( osgDB::InputStream& is, osg::StateSet& ss )
 static bool writeTextureModeList( osgDB::OutputStream& os, const osg::StateSet& ss )
 {
     const osg::StateSet::TextureModeList& tml = ss.getTextureModeList();
-    os << tml.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(tml.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::StateSet::TextureModeList::const_iterator itr=tml.begin();
           itr!=tml.end(); ++itr )
     {
@@ -212,7 +212,7 @@ static bool checkTextureAttributeList( const osg::StateSet& ss )
 
 static bool readTextureAttributeList( osgDB::InputStream& is, osg::StateSet& ss )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     osg::StateSet::AttributeList attrs;
     for ( unsigned int i=0; i<size; ++i )
     {
@@ -232,7 +232,7 @@ static bool readTextureAttributeList( osgDB::InputStream& is, osg::StateSet& ss
 static bool writeTextureAttributeList( osgDB::OutputStream& os, const osg::StateSet& ss )
 {
     const osg::StateSet::TextureAttributeList& tal = ss.getTextureAttributeList();
-    os << tal.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(tal.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::StateSet::TextureAttributeList::const_iterator itr=tal.begin();
           itr!=tal.end(); ++itr )
     {
@@ -251,7 +251,7 @@ static bool checkUniformList( const osg::StateSet& ss )
 
 static bool readUniformList( osgDB::InputStream& is, osg::StateSet& ss )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         osg::Uniform* uniform = dynamic_cast<osg::Uniform*>( is.readObject() );
@@ -267,7 +267,7 @@ static bool readUniformList( osgDB::InputStream& is, osg::StateSet& ss )
 static bool writeUniformList( osgDB::OutputStream& os, const osg::StateSet& ss )
 {
     const osg::StateSet::UniformList& ul = ss.getUniformList();
-    os << ul.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(ul.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::StateSet::UniformList::const_iterator itr=ul.begin();
           itr!=ul.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/TransferFunction1D.cpp b/src/osgWrappers/serializers/osg/TransferFunction1D.cpp
index be3d2da44..50e7372b7 100644
--- a/src/osgWrappers/serializers/osg/TransferFunction1D.cpp
+++ b/src/osgWrappers/serializers/osg/TransferFunction1D.cpp
@@ -10,7 +10,7 @@ static bool checkColorMap( const osg::TransferFunction1D& func )
 
 static bool readColorMap( osgDB::InputStream& is, osg::TransferFunction1D& func )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         float key = 0.0f;
@@ -25,7 +25,7 @@ static bool readColorMap( osgDB::InputStream& is, osg::TransferFunction1D& func
 static bool writeColorMap( osgDB::OutputStream& os, const osg::TransferFunction1D& func )
 {
     const osg::TransferFunction1D::ColorMap& map = func.getColorMap();
-    os << map.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(map.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::TransferFunction1D::ColorMap::const_iterator itr=map.begin();
           itr!=map.end(); ++itr )
     {
diff --git a/src/osgWrappers/serializers/osg/VertexProgram.cpp b/src/osgWrappers/serializers/osg/VertexProgram.cpp
index 834fc96aa..79909ca34 100644
--- a/src/osgWrappers/serializers/osg/VertexProgram.cpp
+++ b/src/osgWrappers/serializers/osg/VertexProgram.cpp
@@ -11,7 +11,7 @@ static bool checkLocalParameters( const osg::VertexProgram& vp )
 
 static bool readLocalParameters( osgDB::InputStream& is, osg::VertexProgram& vp )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         GLuint key; osg::Vec4d value;
@@ -25,7 +25,7 @@ static bool readLocalParameters( osgDB::InputStream& is, osg::VertexProgram& vp
 static bool writeLocalParameters( osgDB::OutputStream& os, const osg::VertexProgram& vp )
 {
     const osg::VertexProgram::LocalParamList& params = vp.getLocalParameters();
-    os << params.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(params.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::VertexProgram::LocalParamList::const_iterator itr=params.begin();
           itr!=params.end(); ++itr )
     {
@@ -43,7 +43,7 @@ static bool checkMatrices( const osg::VertexProgram& vp )
 
 static bool readMatrices( osgDB::InputStream& is, osg::VertexProgram& vp )
 {
-    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    unsigned int size = is.readSize(); is >> osgDB::BEGIN_BRACKET;
     for ( unsigned int i=0; i<size; ++i )
     {
         unsigned int key; osg::Matrixd value;
@@ -57,7 +57,7 @@ static bool readMatrices( osgDB::InputStream& is, osg::VertexProgram& vp )
 static bool writeMatrices( osgDB::OutputStream& os, const osg::VertexProgram& vp )
 {
     const osg::VertexProgram::MatrixList& matrices = vp.getMatrices();
-    os << matrices.size() << osgDB::BEGIN_BRACKET << std::endl;
+    os.writeSize(matrices.size()); os << osgDB::BEGIN_BRACKET << std::endl;
     for ( osg::VertexProgram::MatrixList::const_iterator itr=matrices.begin();
           itr!=matrices.end(); ++itr )
     {