Getting insight in PhysX 3.3 deserialization

I am working on a haptic interactive virtual reality environment. We build our scenes in PhysX and deserialize the RepX-files, which are created by 3DS Max.
However, sometimes there are errors in the RepX-files (for example, in PhysX 3.2 it was not possible to make convex hull objects if I remember correctly) – this generates a compiler spew-like error message through the provided error reporter callback. Instead I’d like to know which actors / joints / whatever cause the failure.
How do I approach generating meaningful error messages from deserialization?