ASG 2015 upgrade 2012 error

[kpg@computercamp.dk]

I have installed ASGRD 2015 into a new database and i can start the application.
How ever when i attempt to upgrade my existing 2012 installation (A DB copy), i recieve the following error during the "upgrade error log data" phase:

Migration Aborted
Excecutereader
at upgraderhelper2012.upgrade.start()
at upgradehelper2012.migrationwizard.backgroundworkerexceute_Dowork(Object sender,.....
.......

The error messeage goes on, see attachment

Can any one help with this.