[Phpgroupware-users] filemanager: cannot delete or move uploaded files

[Philipp Sutter]

i am using the filemanager of phpgroupware 0.9.16.008. in the
application i uploaded a file in a group directory. i can download this
file but i cannot delete it. 

has anybody a hint, why i can't delete my uploaded files?

and when i try to move the file in a other directory i get a strange
error:

Fehler: Konnte /home/Dateien/ý5©Ý9LÅ!XÁ­ÑMÕÝ‘aEÕdÍ8 nicht
nach /home/user/ý5©Ý9LÅ!XÁ­ÑMÕÝ‘aEÕd verschieben.

and it is not possible to rename this file, but others.

anybody a hint for this problem? thank you in advance!