[Meshlab-devel] assertion crashes

[skunkwerk <sku...@gm...>]

i'm getting this error:
meshlab: ../../../vcglib/vcg/complex/trimesh/update/flag.h:339: static void
vcg::tri::UpdateFlags<UpdateMeshType>::FaceBorderFromNone(UpdateMeshType&)
[with UpdateMeshType = CMeshO]: Assertion `p==e.end()' failed.

from a call to GLA()->mm()->updateDataMask(req);
the thing is, i haven't changed the mesh at all - I've just accessed its
faces and vertices.  so i'm not sure why this is happening..
any ideas?

thanks,
imran