Hello Xen,
Most likely the problem is that CVI 5.5 is not supported on WinXP. In fact, according to the Release Notes,
"
To run LabWindows/CVI, you must have the following:
• Personal computer using a Pentium 90 or higher microprocessor
• Windows 2000, Windows NT 4.0 Service Pack 3, Windows 98, or Windows 95
• 800 by 600 resolution (or higher) video adapter
• Minimum of 16 MB of RAM
• 50 MB free hard disk space
• Microsoft-compatible mouse
"
So I would suggest either upgrading your version of CVI or installing CVI on a machine with a different operating system (2000, NT, 98 or 95).
Thanks.
Wendy L
LabWindows/CVI Developer Newsletter