If I recall correctly there has been an issue with some groups not being recognized and there was a fix for it (unsupported by MS) but I cannot recall exactly what it was. Maybe someone else remembers more clearly than I do.

If you put a simple:
 Code:
if ingroup("somegroup")
  ?"In group"
else
  ?"Not in group"
endif


in a test script and run it does it also fail?
_________________________
Mart

- Chuck Norris once sold ebay to ebay on ebay.