Sql server 2012 and BI server integration errors

Dear All,
I'm newbie in Pentaho BI Server Community version.
I'm using biserver-ce-4.8.0 on Windows 7 and Sql Server 2012.
I was able to successfully install biserver as a service.
I can start Admin Console (with eror messages) but I can't create any Database Connection.
I have also noticed that there are errors reported in stdout.log file (see attachment)
I'm counting on experienced Pentaho users to get help to solve the problems.
Thanks in advance.
Adam

Attached Files

• stdout.log (15.6 KB)