When installing SCAC (System Center App Controller) 2012, you may need to review the installation logs. These are placed in the %UserProfile%\AppData\Local\Temp\AppController\Logs path.
Reviewing the log today, I found a typo in the file. It’s not anything that’s going to effect the installation, but worth noting if you are trying to search the log files for particular keywords.
10:14:02:RemoveConceroRegistry: Removing registry key on rollbak.
This should obviously read rollback not rollbak.