xPUNlSH3Rx

Were you able to fix this? I had the same issue this weekend and was able to fix it after a few hours of messing with it. Follow these steps to the T... 1. Exit Steam then go to Start, type run then regedit 2. Go to LOCAL_MACHINE/SOFTWARE/Wow6432Node 3 . Now you will see 2 folders, Bohemia Interactive and Bohemia Interactive Studio 4. Do this for both folders-Right click on each folder (NOT the Sub-folders. I wasn't able to delete the file until I did it to the main folder) -Go to permissions -Allow full control for all of them 5. Now open each of the folders and delete "ArmA 2 OA" 6. Exit 7. Start Steam and now do what AmberHelios suggested and verify both Arma2 and Arma OA's game cache 8. In Dayz Commander the Arma2 will need to be re-installed, I'm sure you know what to do here You now should be able to play DayZ :)

You do not have the permissions in regedit. I was having the same issue, what you do is right click on "Bohemia Interactive Studios" folder itself and then go down to permissions and allow full control in each by going to advance then edit, then click apply and ok. All done you should now be able to delete the sub-folders ex. Arma2OA... If you have any questions please feel free to message me!