I have trouble starting the Operation Arrowhead. finished downloading today by steam arma 2 and OA, arma 2 everything works perfectly, the problem is that when I run for the first time the OA and attempt to access a server to test and got an error that was not valid cd key , went back to run and I came the following errors:
"No emtry 'bin / CfgIngameUI / MPTable.shadow" and followed by this, this ...
Error compling PSSpecularAlpha pixel shader: 0
Question, did the OA backup and uninstall and reinstall, but I keep going the same.