Trouble with reopen windows after toggle desctop

[stefan!]

I call a sub vi and at the same time the window of
the main VI is closed (that works fine).
On the sub VI I have the posibility to toggle the desctop, but afterwards I have problems with reappearance of the window, sometimes it works,
sometimes not, I have problems to find the problem.
See the file, that is attached.

[stefan!]

I improved my code:
1.) I inserted a pause after toggle Desktop.
2.) I specified: FrontPanel is not resizable.
3.) I call cmd in minimized mode.
In the file there are three versions of
the target sub vi, only the simple version
is invoked, I'm not yet satisfied, but it
works. Have fun! Stefan