Cannot move folders over Shares

Hello!

I run into some difficulties when I try to move folders:

This code works:
Code:
 $src="c:\tmp\sourcefolder\"
 $dest="c:\tmp\Destination\"
 Move $src $dest


This one doesn't:
Code:
 $src="\\server\share1\sourcefolder\"
 $dest="\\server\share2\"
 Move $src $dest


Error number and message are:
Quote:

ERROR 123: The filename, directory name, or volume label syntax is incorrect.



I tried it with COM:
Code:
$fso = CreateObject("Scripting.FileSystemObject")
$err=$fso.MoveFolder($src, $dest)
$fso=0


and get no error in both cases (local and remote move) - but nothing happens...

Can somebody please push me in the right direction? I prefer working with Shares.

Thank you very much in advance.