Darky Key Changer help

[xTyphon]

I used the Darky key changer and ban checker and it works. BUT it wont let me play. I keep getting the bad Serial number pop up whenever i join a server. Any ideas or help on how to fix this?

[Drithric]

Go into your registry for bohemia interactive and arma 2 and delete arma 2 oa from both. Then go on steam and validate files for it and try again. Worked for me.

[[MPGH]Jim Morrison]

Make sure steam isn't auto updating your key, check your key after you join a game.

[xTyphon]

got it working again thanks guys