Hello,
This forum is for beta questions only. Since the beta is wrapping up I'd suggest contacting support if you need additional assistance, or asking this question under the GP Partner Forums.
A few things you can check:
1. This is a generic error but usually isn't related to the version.
2. Check permissions for the account running the Application Service.
3. Check permissions for the account running the Application Pool in IIS.
4. Run a SQL Profile with Error & Warnings and T-SQL to see if it is actually communicating with the database.
Thanks
Ryan