From Pjotr Svetachov, "have added some missing serializers for RigGeomery. Withouth them I

ran into two issues.

At first you get a bunch of warnings that osg::ComputeBoundCallback
and osg::UpdateCallback were unsupported wrapper classes when
converting fbx models with skeletal animation to osg(t/b).

The second issue was that when reading, the readers fail to read the
ComputeBoundCallback and UpdateCallback and set them to NULL which
messes up the RigGeometry.

Because a RigGeometry makes his own classes in the constructor it
might be preferable to not write them at all, because now those
classes are being made two times when reading a RigGeometry. But after
thinking about this that would place too much limits on them (you
won't be able to share or name them and save that information or make
a new inherited class from them and write that one) So I ended up
thinking the best way was to just write the files.
"

src/osgWrappers/serializers/osg/ComputeBoundingBoxCallback.cpp

@@ -0,0 +1,17 @@
+#undef OBJECT_CAST
+#define OBJECT_CAST dynamic_cast
+
+#include <osg/Drawable>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER2(osg_ComputeBoundingBoxCallback,
+                        new osg::Drawable::ComputeBoundingBoxCallback,
+                        osg::Drawable::ComputeBoundingBoxCallback,
+                        "osg::ComputeBoundingBoxCallback",
+                        "osg::Object osg::ComputeBoundingBoxCallback") {
+}
+
+#undef OBJECT_CAST
+#define OBJECT_CAST static_cast

src/osgWrappers/serializers/osg/UpdateCallback.cpp

@@ -0,0 +1,16 @@
+#undef OBJECT_CAST
+#define OBJECT_CAST dynamic_cast
+
+#include <osg/Drawable>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER2(osg_Drawable_UpdateCallback,
+                         new osg::Drawable::UpdateCallback,
+                         osg::Drawable::UpdateCallback,
+                         "osg::UpdateCallback",
+                         "osg::Object osg::UpdateCallback") {}
+
+#undef OBJECT_CAST
+#define OBJECT_CAST static_cast

src/osgWrappers/serializers/osgAnimation/RigComputeBoundingBoxCallback.cpp

@@ -0,0 +1,16 @@
+#undef OBJECT_CAST
+#define OBJECT_CAST dynamic_cast
+
+#include <osgAnimation/RigGeometry>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER(osgAnimation_RigComputeBoundingBoxCallback,
+                        new osgAnimation::RigComputeBoundingBoxCallback,
+                        osgAnimation::RigComputeBoundingBoxCallback,
+                        "osg::Object osg::ComputeBoundingBoxCallback osgAnimation::RigComputeBoundingBoxCallback") {
+}
+
+#undef OBJECT_CAST
+#define OBJECT_CAST static_cast

src/osgWrappers/serializers/osgAnimation/UpdateVertex.cpp

@@ -0,0 +1,16 @@
+#undef OBJECT_CAST
+#define OBJECT_CAST dynamic_cast
+
+#include <osgAnimation/RigGeometry>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER2(osg_Drawable_UpdateCallback,
+                         new osgAnimation::RigGeometry::UpdateVertex,
+                         osgAnimation::RigGeometry::UpdateVertex,
+                         "osgAnimation::UpdateVertex",
+                         "osg::Object osg::UpdateCallback osgAnimation::UpdateVertex") {}
+
+#undef OBJECT_CAST
+#define OBJECT_CAST static_cast