Zidoo Z1000 Pro with newest firmware loose connection to Samba Shares on Qnap Nas

Hi I have a Zidoo Z1000 Pro.
When I turn it off and return a day or two later it has typicvally lost connection to maps on my Qnap Nas Shared through Samba.
All equipment has static IP adresses - I read somewhere that it would help.
When I turn on the Z1000 Pro it can't see the shared map any more.
If I try to rescan Samba and then the lost map it says "unknown error"
It doesn't matter if I try through the Filesystem app or the Home Theater App.
The weird thing is that if I wait for 5 minutes and try again then its working.
I have none of these problems with my Apple TV or Zapitti player connected to the same shares.
So it's a Zidoo error.

If anyone has a clue thats going on I would be most gratefull if you would share your experience with me.
Thank you in advance.