Files not showing after upgrade to NC11

Hi everybody, I upgraded from NC 10 to NC 11, now my files aren’t showing anymore. Instead, error “Dieses Verzeichnis ist nicht verfügbar, bitte überprüfen Sie die Logdateien oder kontaktieren Sie den Administrator” shows up. Searching the internet, I found this used to be a problem in older OC 8 versions and supposedly had been fixed (

Disabling the sharing app brings back the files. However: re enabling the app makes them disappear again.

Any help is highly appreciated! Thanks!

Sorry, finally found the file sharing app. Did not remember to need that one…