We've received reports from other players experiencing similar errors. We currently don't have a fix at this time, but we are investigating the issue. Along with reports submitted directly to Support, The Steam team uses a number of community sources to help investigate the frequency and severity of issues like this. I would encourage you to search for the issue and post about it in one of the more active Steam community hubs, as other users may be experiencing the same thing. Official Steam Feedback Official Steam Help Steam SubredditAgain, I am sorry that we do not have a fix for you at this time. I recommend opting into the Steam Beta in the meantime to make sure Steam receives all updates as soon as they're available. Steam Support Brian
Why you wouldn't? You can also add in the command line from the COH NSV the parameters to run the Steam version of EF instead of using the EF entry on the library... however, you won't get achievements and you will be shown as playing COH NSV instead of COH EF.