Hello.
I have 2 Steam accounts, both with ARMA 2 + ARMA 2 CO + BAF + PMC DLC, so I can have two DayZ characters.
Problem is that everytime I switch between my Steam user, both the BAF and PMC DLC stop working. When I start up the game I get this error: "Failed to load file: D:\Games\Steam\steamapps\common\arma 2 operation arrowhead\pmc\addons\air_pmc.pbo - decryption of headers failed". So if I go into Steam and select properties for both the DLC titles, run the 'Verify Integrity of Game Cache' I get the option to uninstall BAF/PMC. After doing that and starting up Combined Operation once again, both DLC will again install and function... Until I switch Steam account... again that is!
And before anyone asks.. Yes I do run everything as administrator (UAC is disabled).
Anyone got a working fix for this?