[away3d] Upgraded to 3.3.3 and getting runtime errors

[nathan]

Hey all,

i have successfully upgraded (well almost) to the newest away 3d
source and getting a runtime error.

I don't get any compile errors and all in all it was a pretty smooth
transition over to the new source, but I get a major crash...

Main Thread (Suspended: TypeError: Error #1009: Cannot access a
property or method of a null object reference.)
        away3d.core.utils::DrawPrimitiveStore/createScreenVertex
        away3d.cameras.lenses::ZoomFocusLens/project
        away3d.core.project::MeshProjector/primitives
        away3d.core.traverse::PrimitiveTraverser/apply
        away3d.core.base::Object3D/traverse
        away3d.containers::ObjectContainer3D/traverse
        away3d.containers::ObjectContainer3D/traverse
        away3d.containers::View3D/render
        onEnterFrame

I think it crashes because _vertexDictionary is null....

Maybe its a bit hard for you guys to say what is causing this as you
don't know the internals of my application, but any ideas on where I
should start looking?

Thanks for your time,
Nathan