Hello ASIC IIBU Tech,
Are you using "Break Execution Ctrl-F12" to break your program and then "Continue F5" to resume execution? If you are and you still think you are seeing an error, then you might contact us at http://www.ni.com/support or http://www.ni.com/ask. If you are pressing any of the toolbar buttons besides Go or using some other button to resume execution, CVI may be stepping out of your while loop at your command. The "LabWindows/CVI User Manual" explains the different buttons and their actions, please see Start >> Programs >> National Instruments >> Measurement Studio >> Online Help >> CVI Manuals or http://www.ni.com/manuals for further information.
Jeremiah Cox
Applications Engineer
National Instruments
http://www.ni.com/ask