eXtplorer - PHP-based File Manager

Hi,

i like extplorer with the usability and how it looks like. But i can't use it :(
Some folders with special chars like ü, ö, ä aren't displayed correctly.

I tried to remove utf8 encoding like suggested in this forum:
http://www.synology-forum.de/showthread.html?3785-3rd-Party-eXtplorer-Umlaute&p=24067#post24067
(<- Note: Use translator to get in english)

'Bücher' is displayed to 'B?'
and
'Urlaub - Ausflüge - Besuch' => 'Urlaub - Ausflg00650020002d0020Besuch'

Hope this information helps to fix the problem.
Let me know, if problem is solved, so i can start using this great tool.