Opmanager starts but corrupts database, please help!

Hello!

Recently I installed a fresh install of Opmanager 8 and updated it to v.8812. I added many devices and created maps, but after Windows Server 2008 updated a few things it restarted and Opmanager went haywire! It starts as a service, in web interface I get "Initializing Modules..." for a minute or so, and then a login screen appears. When I try to log in with correct credentials I get "Oops looks like a few tables got corrupted. Don't worry.. Run RepairDB.bat from bin directory and restart the server". I follow that directive and get a successful repair message. Starting the Opmanager service again gets me to "Initializing Modules" and DB corruption again. So, I run around in circles...
My log files and repairdb oputput are attached.

P.S. No antivirus is installed, firewall disabled, not a single third party program installed, only Windows and OpManager, default installation with mysql.