Hi. I recently installed COD 1 and United Offensive add on, on my windows 10. The version of main game is 1.3 and the add on is 1.41. Now I want to install version 1.5/1.51 patch on both of them but I get a error message like this:
So how can I get rid of that?
(PS: I've already tried to install v1.4 patch on main game but I got the same error message).