Hi!
When I install Mp3tag over an existing installation (updating), the install routine suggests "Bisherig" (as before in english?).
During install my shortcut on the Quick Launch Toolbar (C:\Users<username>\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch) gets removed but is not restored. Each time I update, I have to create the shortcut again.
Not really a bug, but something that could be improved 
Regards,
Michael