Bad serial key given in setup? ARMA 2 : COMBINED OPERATIONS

[Gannon]

how do i fix this i tried everything :(:( my arma 2 part of the package is the only part that wont work my Operation Arrowhead works just fine.. Iv tried everything to do with running as admin and the "regedit" aswel iv even deleted them both and installed them seperatly..any suggests aanyone?

[nat]

Key for which game? (do not post the key)
Maybe the key is already in use when Steam tells you duplicated Code. then you can't do much about it.
When you are sure the key is never used, the package was unopened before and orginal then uhh contact Steam Support if it's a Valve game or contact the publisher via support of the game.

[Satoru]

Might help to give the game name, the exact error message, and where you bought it from

[Gannon]

iv put the name there now.

[Satoru]

http://forums.bistudio.com/showthread.php?138564-quot-Bad-serial-number-given-in-setup-quot-Error-%28Tried-everything%29&s=a1d3271be0f948a80c282aacee5f9006&p=2204884&viewfull=1#post2204884

Try the fix outlined here. It's somethign with the registry keys it creats

[Gannon]

i found it out i did that and then you just have to turn off your computer and turn it back on, Thanks for the help man.:)