Cisco Secure ACS v 4.1 Database was corrupted by SEP

I have 2 servers that run ACS v 4.1. When I upgraded one from SAV to SEP, I included the following exceptions

C:\Program Files (x86)\CiscoSecure ACS v4.1

C:\Program Files\CiscoSecure ACS v4.1

Within a day or two one of them stopped working. I was told that the database was corrupted by SEP. I did not see anything in the risk history.

Does anyone have any idea what went wrong or what I may have missed?

Thank you.