I can see that this problem seems to have come up slowly over time. By searching for it I can also see that the problem occurs in Visual Basic and Visual C.
Historically the problem has only occured with computers running LV 7.1. No customers have reported it in later LabVIEW versions, but they also haven't confirmed that the problem went away with LV 8.0.
You may want to look at this KB to see if it is relevent:
<a href=" http://www.yqcomputer.com/
" target="_blank"> http://www.yqcomputer.com/
Tell me if it solves the issue.