Thanks for the quick reply.
I'm using an iMac (21.5-inch, Mid 2011) and the game won't even open at all and I just get a message saying the game quit unexpectedly. The game last worked for me before the newest update.
Hmm, actually that shouldn't be the problem, that version should be supported. I'll look into it when I have time (later this week probably), it might be trickier to figure out.
Could you maybe fill in this form please? (You can just put in your email, I haven't set it up properly yet). I haven't got a computer with an environment like yours so it's hard for me to test whether it would work or not, I might need to send a build to you to test if it works. (Hopefully that won't be necessary, but just in case)