I am attempting to upgrade the standalone version to 2013.2.1210 from 2013.1.1002.
I am running the execution and storage server on this machine. During the isntall, I am geting an erormessage that there already exist a database by the name TestStudioStorage2, and that is correct. That is the database I want to reuse (Same one I set up previously).

Because I get that error I try to set up a new database called TestStudioStorage3 but now I get the errormessage that NT AUTHORITY\SYSTEM must have the dbcreator role, which it already has. And the user doing this installation must have sysadmin role, which it does.

What is causing this behavior?