"The Setup has detected that no version of Off-Road Drive is installed."

[ASUSfreak]

Did you right click on the patch, and run it as admin? (Even though you might be the only one who uses the computer, thus being the admin, you sometimes still have to do it that way...)

[Vojta7]

I have the same problem. Setup was run as administrator, but I still the above error...

[iwannaplay]

the patch is pointless for non steam version as in another persons post, it doesnt doo anything and wont work.