>>>>If you were able to SET DEFAULT TO the AppB directories, then AppA would not be able to see them.
>>>
>>>Correction:
>>>If you were able to SET DEFAULT TO the AppB directories, then AppA would no longer be able to see the AppA directories.
>>>
>>>Hopefully, that makes more sense. <g>
>>
>>You're all missing an important option - just run in separate VFP sessions and they can't mung each other. If AppA and AppB do not interact directly, as is suggested in the thread, then why not just run them separately?
>
>Ed,
>
>This is a great suggestion, but not for me :( On the opposite, we need the application A to run all other applications: Application B, C, D, E, etc.
>

Fine - so AppA launches AppB, AppC, AppD each as a separate VFP session. No sweat. AppA doesn't even have to be in VFP if all it is doing is launching the other apps.

>I'm not sure, I want to make application B to use modal forms. We'll discuss it with my colleague. Is it the only option here or we can make it work other way?
>

You'd have to change the Forms to set their paths in their Activate event, and block their execution in their Deactivate, so they only run when they have Focus.