diff --git a/src/osg/Image.cpp b/src/osg/Image.cpp
index ed4853f8e..29b0ac84b 100644
--- a/src/osg/Image.cpp
+++ b/src/osg/Image.cpp
@@ -308,9 +308,11 @@ unsigned int Image::getTotalSizeInBytesIncludingMipmaps() const
         case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT):
         case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT):
            sizeOfLastMipMap = maximum(sizeOfLastMipMap, 8u); // block size of 8
+	   break;
         case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT):
         case(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT):
            sizeOfLastMipMap = maximum(sizeOfLastMipMap, 16u); // block size of 16
+	   break;
         default: break;
    }
 
diff --git a/src/osgDB/WriteFile.cpp b/src/osgDB/WriteFile.cpp
index a16c3aab3..c223eeddd 100644
--- a/src/osgDB/WriteFile.cpp
+++ b/src/osgDB/WriteFile.cpp
@@ -27,7 +27,7 @@ using namespace osgDB;
 bool osgDB::writeObjectFile(const Object& object,const std::string& filename)
 {
     ReaderWriter::WriteResult wr = Registry::instance()->writeObject(object,filename);
-    if (wr.error()) notify(WARN) << wr.message() << std::endl;
+    if (wr.error()) notify(WARN) << "Error writing file " << filename << ": " << wr.message() << std::endl;
     return wr.success();
 }
 
@@ -35,7 +35,7 @@ bool osgDB::writeObjectFile(const Object& object,const std::string& filename)
 bool osgDB::writeImageFile(const Image& image,const std::string& filename)
 {
     ReaderWriter::WriteResult wr = Registry::instance()->writeImage(image,filename);
-    if (wr.error()) notify(WARN) << wr.message() << std::endl;
+    if (wr.error()) notify(WARN) << "Error writing file " << filename << ": " << wr.message() << std::endl;
     return wr.success();
 }
 
@@ -43,13 +43,13 @@ bool osgDB::writeImageFile(const Image& image,const std::string& filename)
 bool osgDB::writeHeightFieldFile(const HeightField& HeightField,const std::string& filename)
 {
     ReaderWriter::WriteResult wr = Registry::instance()->writeHeightField(HeightField,filename);
-    if (wr.error()) notify(WARN) << wr.message() << std::endl;
+    if (wr.error()) notify(WARN) << "Error writing file " << filename << ": " << wr.message() << std::endl;
     return wr.success();
 }
 
 bool osgDB::writeNodeFile(const Node& node,const std::string& filename)
 {
     ReaderWriter::WriteResult wr = Registry::instance()->writeNode(node,filename);
-    if (wr.error()) notify(WARN) << wr.message() << std::endl;
+    if (wr.error()) notify(WARN) << "Error writing file " << filename << ": " << wr.message() << std::endl;
     return wr.success();
 }
diff --git a/src/osgPlugins/ive/ReaderWriterIVE.cpp b/src/osgPlugins/ive/ReaderWriterIVE.cpp
index eb634bf75..9fef785d6 100644
--- a/src/osgPlugins/ive/ReaderWriterIVE.cpp
+++ b/src/osgPlugins/ive/ReaderWriterIVE.cpp
@@ -82,6 +82,8 @@ class IVEReaderWriter : public ReaderWriter
                 local_opt->setDatabasePath(osgDB::getFilePath(fileName));
 
             std::ofstream fout(fileName.c_str(), std::ios::out | std::ios::binary);
+	    if (!fout) return WriteResult::ERROR_IN_WRITING_FILE;
+	    
             WriteResult result = writeNode(node, fout, local_opt.get());
             fout.close();
             return result;
@@ -103,6 +105,9 @@ class IVEReaderWriter : public ReaderWriter
                 out.setOptions(options);
 
                 out.writeNode(const_cast<osg::Node*>(&node));
+
+    	    	if ( fout.fail() ) return WriteResult::ERROR_IN_WRITING_FILE;
+
                 return WriteResult::FILE_SAVED;
             }
             catch(ive::Exception e)