>>>Now I still don't see the BROWSE window but the application hangs. I can move this modal window but I can't close it and I can't close the application. So it seems like some reference to the BROWSE window exist (my guess).
>>>
>>>>Try
>>>>

>>>>BROWSE NORMAL
>>>>BROWSE NORMAL IN SCREEN
>>>>

>>>>
>>
>>Is your _screen visible?
>>
>>Try
>>
>>_screen.visible = .t.
>>browse normal in screen
>
>The value of my _screen.visible is always .T. and I already tried the BROWSE NORMAL IN SCREEN. Still not working.

Add SET RESOURCE OFF also before calling it. I think I'm running out of the ideas - may be timer interferring?