I have the old version of Van helsing from 2 years ago final cut, which works We have played multiplayer a lot through lan offline. We updated to the newest version offline from gog. Now we are getting a version mismatch. Any help with this will be much appreciated !

I have windows 7, he has win10. That is not the issue, since we played the old version perfectly, and can still play the old version, but we want the new version.

Below is an image of the mismatch. We don't use GALAXY or STEAM !
We are also both using the same Installer Offline version.

We also do not use mods. Straight from the Gog Offline Downloads.