Traceback/Exit backing up GCRI (Granite Cross-Release Interoperability) import to disk

We are reading a Creo Parametric 3.0 assembly into 2.0 using GCRI .  Comes up into 2.0 session great, can even save individual parts, but as soon as we then attempt to backup the assembly or any sub-assemblies to disk we get a traceback/exit.  We are backing into a new directory, and have also tried renaming all components.  No deal.

PTC has reproduced the problem, and there is an open SPR on it, but I was wondering if anyone had experience or suggestions on getting it resolved as we're sort of in a hurry here. 

Thanks.