Crashing when making RAW or FILTER callback

Anyone had the problem of attaching a callback for FILTER and the program immediatly segfaults, and when using a RAW callback, the OS appears to crash completely, no screen activity, mouse pointer frozen, and cannot SSH in.

As you can imagine as QNX has locked up, it is a bit of an ordeal trying to locate the problem! :frowning:

Any tips, hints, appreciated, I’m trying to get drag and drop working, which is why I need the RAW callback in the first place.