I have NEVER had any version of Cod 1 or Cod UO installed. The only Cod thats ever been installed on my Pc is Cod2, From the warchest.
I purchased the warchest that came with Cod2, Cod1, And Uo.. I uninstalled Cod2 to see if it made a difference and removed all registry files. No different, I still get the very same error.