Sorry about the typos. I'm using INGROUP, not INGROUPS.

KIXRPC is running on all logon servers.

I'm home right now, so can't even grab a copy of any of the scripts I've tried. However, the offending test line is always something as simple as:
IF INGROUP("Administrators")

The tests have been with all upper, all lower and mixed case, even though it's not supposed to matter. (I was desperate.)

I also tested for actual return values of 0, 1 and 2, although all I really need is any non-zero value.

By placing a PAUSE command in the calling batch file I was able to view the output and no script errors were reported.

I have tried testing for both local and global groups.

Sarge, http://home.wanadoo.nl/r.s.m.s.dejong/Kixtart was a dead link when I tried it a few moments ago. I'll try again later.

I think taht pretty much covers the questions asked so far. Once again, any ideas?