> NetStack Log pops up and says
> Thu Jun 17 21:15:23 2015 [err ]: inetd[20cab740]: Re-Open(TCP:O=65540):
> : Gerät (oder Datenträger) ist nicht angemeldet
> This means something like "device or disk is not mounted.
> What does it mean? Which device is not logged on?

Reads to me like you need to mount TCP: