Hi Jim,
The 6.22 version was the last version released by ISI in November 1999 or nearly 8 years ago. This is a version we cannot support.
As National Instruments, we only support the versions we released (6.3.2, 7.1.x and 8.x).
It is highly likely that your problem has been fixed in more recent versions because we definitely do not see the behavior you describe. So you will have to upgrade to a newer version.
Please contact your local NI sales for information on how to obtain support and the latest releases.
Dirk De Mol
MATRIXx R&D