Hi Andy,
I've done some research into which operating systems were tested with LabWindows CVI v5 for you since LabWindows CVI 5.0 is no longer supported by NI. From what I found out, CVI v5 was not tested on Windows XP which may be why the installer fails as some files may not be handled properly. NI also recommends that when a system is developed it is developed on the same operating system it will finally be installed on so all the files and code is handled in the same way to prevent unseen problems occuring. Unfortunately all I can suggest is that you try building an installer for your
application on a Windows 2000 PC.
Best Regards,
Chris M
Applications Engineer
National Instruments (UK)