I cant play Stronghold Crusader HD anymore. I updated my Mac to Mojave and since then it doesnt load the game, i can click on "play", but then it doesnt start at all, just giving me the massage that all files are synchronized.

Anyone an idea?

Congratulations, you've upgraded to Mac Mojave. A lot of people have been reporting problems with this on multiple titles.

There's a terminal command you can probably run, but I wouldn't know what it is.