Does anyone know why Myst Exile won't save on mac? Each time I press save and quit it asks if I want to save. I finally have to say don't save and quit then start over again. Running Ctatalina but it didn't work well on Mojave either.

I don't own the game yet, so I don't know what wrapper it uses.

Although I can't answer your question, I can suggest trying a workaround.

You can try running it through ResidualVM at https://www.residualvm.org/ under Downloads.