Hello-
This error is caused by a faulty process that does not close GPIB sessions. With these orphan sessions, a call to open another GPIB session will cause Windows to assert this screen.
The solution to the problem is to call ibonl(ud,0) for each session that is open. This typically needs to occur just before terminating the process using GPIB.
If this solution is not working, please write back.
Randy Solomonson
Application Engineer
National Instruments