>I'm installing my app in different computers about 4to6, everything's fine in three of them, when I install my app in a computer running VFP 6.0 or have another VFP 6.0 app installed, my app just load but it doesn't open it, My app appear in the task list, and no error is showed, I guessed the problem was a corrupt vfp6renu.dll file and I changed it, but I didn't solve the problem
>How do I work around with that ??

Time to do some troubleshooting Carlos. You put an error handler in your app that tells which line of your program is giving an error.

You might try uninstalling the app then reinstalling it with the setup routine that your created.

Try creating a VFP application that just runs a wait window or a messagebox. Does this work on that computer. If it does then build from there. Do you have service pack 3 installed?