Minimserver install fails: unable to access shared folder

[z624391]

The installation of Minimserver v2 fails with the message "unable to access shared folder".

History:
- install ends up with empty Minimserver folder without any content and any extra information
- no minimserver.log and minimserver-out.log files
- both Minimserver and Java fully removed before install attemp
- QNAP TS-673 configured with storage pool containing both SSD's and HDD's under Q-tier control
- Linux security settings seems OK.

What is happening here? Please advise.