I tried that though, it gives a app crash and then steam tried to 'add' (download) coh.
I saved a link at home, to a thread that stated you have to add some file, which states the game is installed.
@ipkai
If this solution of mine does not work, or I cannot find that file, I will give your way a shot.
huh. i have never run into that issues and i've reinstalled steam at least once a year on average; could be a recent change. i also haven't installed steam on a single drive setup in quite a while so that could be part of it. my path is "D:\Games\Steam\..." it's worked perfectly this way for 5 years.
apparently with origin you have to tell it to start downloading the file, pause the download, copy the files into the new install folder, and upon resuming origin will detect the new files. bit of a pain in the ass though.