Crash with stencil shadows in Dagon application

I'm using the OSMScene class to load a scene exported from 3DSMax/oFusion. All of my objects have "Build edge list" checked.

I've already discovered that the exported "ShadowTechnique" value for the scene is incorrect (it's correct for Azathoth but not for Dagon), so I manually set the shadow technique in my application to correct it.

However, when my application renders a frame, an assertion fails deep within the Ogre3D rendering code in the ShadowCaster::generateShadowVolume() function. I can provide more detail on the location if necessary. The important thing is that if I force the OSMScene::createEntities() function to load the "athena.mesh" model used in the Ogre shadow demo instead of any of my scene meshes, the stencil shadowing works correctly without crashes.

I've tried performing an upgrade on the exported meshes with the OgreMeshUpgrade.exe tool but that didn't seem to have any effect.

Will this be fixed with the transition to Dagon?

This can be more related to the polygon count or complexity your mesh has

There are several topics about issues of meshes and shadows, in special you need to look for any geometry not correctly modeled, in those topics you will find more details