When I install MCP on a client machine I find that most of the time it's not loading the OPG file. I think this is due to a folder permssion problem, it seems to be "locked down" when the MCP folder is created.
I can not create any folders or files in it because I get an access denied error. ePO is not loading the opg file and I'm assuming its because of the security permissions, the log shows:
[ERROR] CWindowsRegistryPolicyDataStore::LoadPolicyOpgFile - Failed to open policy file
[ERROR] CWindowsRegistryPolicyDataStore::LoadPolicyFile - Failed to find a policy file