ArmA beta patch and/or OA problem after changing install location

[SpottedBill 1]

Hey guys,

I had to send my second hard drive to be replaced and therefore had to move my Steam library to my system hard drive. I'm having a problem with Operation Arrowhead and more specifically applying the beta patch. My system seems to be telling the beta patcher that OA is installed at the old location on the D: drive (which is no longer there), and tells me that I either don't have the game installed or that it's corrupted. I uninstalled Steam and reloaded all the ArmA titles I have in hopes that it would reset the settings, but that didn't help.

ArmA 2 starts up fine through Steam after the reinstall, but OA is giving me these error messages:

No entry 'bin\config.bin/CfgInGameUi/MPTable.shadow'

Error compiling pixel shader PSSpecularAlpha:0

And this is what the beta patcher says:

ArmA2 OA is not installed on your computer or installation is corrupted.

I'm running Windows 7. Does anyone have any ideas how I can reset the install location for the beta patcher or fix the OA install?

[SpottedBill 1]

Figured it out, so if you have similar problems: Delete ArmA 2 registry entries (relevant info here) and then verify game cache integrity through Steam. The installation should then correct itself. Hope this helps if someone is in a similar situation.