For the past month, every now and then, seemingly at random, certain maps just wouldn't load, so I'd hit escape and a 'version mismatch' error message would appear on screen. It used to just happen with custom maps. Then it stopped happening altogether, but as of today it's happening with every map. I have tried every suggested fix. This is a bug Tripwire need to deal with.
I am not subscribed to any maps, I have verified my game cache, I have reinstalled twice, my game is fully updated, I have deleted all of the maps from my folder and verified game cache to reinstall them with the latest versions. I am still getting this problem and I'd like to bring attention to it because I should be able to play my favourite online game.