We do have access to some of the commercial Xfrog objects so if you can specify which one it is we may be able to test this. Since it does seem related to the texture unfortunately we won't be able to verify or diagnose it without that, however.
There are some known issues with object rendering at present, as you probably know. The next patch should address many of these problems so you may want to wait for that to see if your problem is solved. However it would certainly be best we could check your specific problem as it may help us to resolve other OBJ-related crashes.
In the meantime you might also try re-saving the object as a TGO after loading and then re-do your population as a TGO reader instead of OBJ.
- Oshyan