Hi Stephan, >> It won't compile. > It would help to show (link to?) your exact changes and the exact failure. Yes, that would have been be helpfull. Luckily Noel remembered and it seems that the 4 files in stoc/test/ that use '<< rExc' in the call to DBG_UNHANDLED_EXCEPTION are not examples of how the macro can be used. Winfried