The Integration Pack for System Center Operations Manager, released for Opalis 6.3 but also avaliable for System Center Orchestrator 2012 Beta does not work with System Center Operations Manager 2012 Beta.
It’s caused by a change inside the SDK.
You can see the error here:
So, I have to create my own activities / powershell scripts for creation of alert or setting maintainance in SCOM 2012 Beta.