Operation Flashpoint Help Please

[smokey2426]

I made a backup of my orig ofp cd by copying all files to hard disk then patching the .exe with a nocd exe. It would not backup otherwise. Lucky cause my son broke the orig in half. I installed using the backup disc. I am trying to install v1.20 update. i have patched the official update with the nocd update patch. then when running the upgrade it get to a certain point and says error the .exe file is damaged or has been modified. I cannot get an orig .exe cause my disk is in half. anyone can help please.