Another Mac user found that launching the game from the nsjw application fixed this issue for them, so you could try that. Is your issue similar to that one, where trying to save just gives you an error sound that nothing happens? And is there an error code given at all?
no I try to save and just nothing happens, I click the file and then save and nothing happens and goes back to choose a file. I have downloaded nsjw but not sure how to use this, how do I open it in the nsjw?
