Twonky server: shared folders field is empty after QNAP TS-412 restart

Hi,

every time I restart my qnap Turbo NAS TS-412 the twonky server shared folder is emptied. It is normally set to the local disk (/share/Multimedia/video). When I restart the Twonky Server only this problem does not occur.

I am using the newest versions:
TS-421 V. 4.0.7
Twonky Server V. 7.2.70.0

Any ideas?

Kind regards
Flom