312 6.0.6 - Issue 'Error backup job "ZZZ". source cannot

I have exactly the same problem with my newly purchased ReadyNAS 102. I also run firmware 6.1.8, I have inside 2 x 2TB WD Caviar REDs HDDs purchased together with the 102 and I have created 3 backup jobs, none of which can even begin. When I set up the jobs and perform the Connection test, everything seems to be in order and the configuration passes the test. However, every time I start the backup job after a few seconds I get the message: "Error backup job [xxxxxx] source cannot be mounted. Moreover, when I tried to install some of the applications that NetGear provides, e.g. the Antivirus Plus, the task cannot be performed. I tried this procedure with 3 different applications with the exact same result. I am about to return the product back for a refund of my Money, unless there would be an immediate solution. I hope NetGear is present and listening...