I have also gotten this error using 4.10 (and an older version but I don't recallw hich one). The error, in my case, logs about 5 red stop signs in the application event log when I try to see if the user is in a specific domain group. This error is in the event viewer of the client.

I am using both windows 2000 and NT 4 clients in a mixed windows 2000 domain (with some NT 4 BDC's still in place).

I get about 5 errors from the one lookup. The command I am using is:

if ingroup("NoSer")
? "No SER on file"
endif

Any ideas? The NoSER group is a domain global group.

[ 26. October 2002, 17:18: Message edited by: Jean-Claude ]