Hi Artie,
Can you send an NI-Spy log? I'd like to see what's happening before and after you get that error. From an XP machine you can launch NI Spy from Start>>All Programs>>National Instruments>>NI Spy. Make sure to press the blue start capture button before you run your program and then stop the capture when the program is finished or has encountered the error. You can then save the file and attach it to your post.
Do you see this behavior every time you run the program? What is your program doing?
Thanks!
JenK