I did this the other day, only with the multiplayer version and sure enough, it didn't change anything. Validating the files for campaign found 29 files missing or corrupt- it retrieved those files and now all is working again- Two days now with no reply from Activision. How nice.
Thankyou. I tried verifying files uninstalling etc and still got same error message. I then installed multi player and everything now works again.
Has the problembeen fixed? I'm still having the problem........errrr
thx mate...alredy done it and it miss9gb file..now downloading...hope it works