>>> When I install it on a machine that was
>>> previously running VFP6 apps, it works
>>> fine. What could I be missing?
>>Do you know if the error message that you get is something that your code is launching or something that happens inside VFP?
>>
>>
>>
>>
>>
>>>>>I am using InstallShield Express to distribute my VFP7 app. When I try to install it on a clean machine, it installs fine but when I try to run the app I get an empty error box. It just says "Program error" and closes before I could do anything. When I install it on a machine that was previously running VFP6 apps, it works fine. What could I be missing?
>>>>Take a look at:
>>>>http://fox.wikis.com/wc.dll?Wiki~InstallShieldExpressAndVfp7~VFP
>>>
>>>I've read everything I could find and I'm still having a problem.
>
>The error does not seem to be coming from my code. It occurs from all 3 of my applications, but does not appear after I install VFP7 on the machine.
Based on what you describe, the problem seems to be that InstallShield is not installing one of the VFP required files. I am not currently using InstallShield express, but last time I tried, I selected these two object/merge modules:

MS VC++7 Runtime Library
MS VFP7 Runtime Libraries