From Per Fahlberg, "I've fixed the dae plugin so it is only using one instance of the DAE.

The crashes seen earlier are gone, it is now possible to read multiple
.dae files and converting both to and from .dae files."

src/osgPlugins/dae/daeReader.cpp

@@ -18,21 +18,17 @@
 
 using namespace osgdae;
 
-daeReader::daeReader()
+daeReader::daeReader(DAE *dae_) : dae(dae_),
+				  rootNode(NULL),
+				  m_numlights(0),
+				  currentEffect(NULL),
+				  geometryMap(),
+				  materialMap()
 {
-    dae = new DAE;
-    m_numlights = 0;
-    currentEffect = NULL;
 }
 
 daeReader::~daeReader()
 {
-    if ( dae )
-    {
-        delete dae;
-        DAE::cleanup();
-        dae = NULL;
-    }
 }
 
 bool daeReader::convert( const std::string &fileURI ) 
@@ -70,9 +66,6 @@ bool daeReader::convert( const std::string &fileURI )
     }
     rootNode = processVisualScene( vs );
 
-    delete dae;
-    DAE::cleanup();
-    dae = NULL;
     return true;
 }