phavar

I have already installed patch 1.20 and I yesterday I tried to install patch 1.30. I executed the .exe file from the "c:\" directory. Then the official logo came out and after 3 or 4 sec the following message came out: "Operation Flashpoint is not installed on your computer or installation is corrupted" What is going wrong? Should I try to execute the .exe file from inside the installation directory of the game (d:\pf\ofp)? Is it a good idea to run the CheckOfp utility? Thanks in advance!