Had the same problem myself...I ordered it on Ebay , new... at first it read the disk and started the install but near 40 % it stopped because it couldn't read the disk.. I thought it was a faulty cd and so I complained to the seller who promptly sent me another copy... but also the other one he sent me had the same problem....!!!!
I Tried changing region from region 2 to 1 (shouldn't matter!) didn't do anything...
In the end I bought the original COH and used the CD key to unlock the other factions...
I uninstalled it a while later but I recently bought Tales of Valor and I tried again to unlock the COH OF missions with my GOld Edition key... couldn't read the darn Cd to validate!! ARGH|!
Now I'm thinking that I have a faulty cd/DVD player...
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