Slitherine

I am a long term user of CM on a Mac since very early days. I have all the games and add ons but now Battlefront is Slitherene I cannot open anything. Could some tell me how I can get all my games back please. Do I have reinstall all the games?????
Cheers,
Peter

All the games have just started to work again????? I didn't do anything except join Slitherene - could that have been it?

And now none of them are working again!