Need Help Opening Opponent K'43 file

[Mr Grumpy]

Yes all east front games have been upgraded to Gold standard as well B44 & F40.

Is this the first file of a new game or have you been passing files with no issues and this just turned up after the upgrade to W10?

This is the first time I've played any Operation Campaign since the W10 upgrade.  

Would he being on Gold cause this problem?

I don't think so because it is the file that appears to be the issue.