Talk:List of Collections/@comment-27886349-20160527082844/@comment-24668482-20160527101533

It is really hard to give any advice without knowing more about what is going on (to help identify if it is the game itself or your macpro that should be looked at). What exactly happens when you try to launch the game? Have you tried launching the game after a computer restart? Have you tried launching the game with no net connections (wifi off/lan cable disconnected)? When did the problem start? (the app was updated to latest version v1.19 in the Mac app store on 17th May, did your problems start immediately after it updated or is it unrelated to this latest update?).

There are a few basic trouble shooting things you could try. But before doing anything, back up your game data to avoid accidentally losing your game progress. See the Backing Up article here for instructions for doing this on Mac.

Then you could try some of the suggestions here:

http://www.cnet.com/news/tutorial-what-to-do-when-a-mac-os-x-application-will-not-launch/

I'd try the first option 'update prebinding' first. Then skip to the 5th option 'clearing caches' before trying the more extreme options (like reinstalling or deleting files, you will definitely need to be confident in your back up before trying those!). From experience with the game on multiple platforms, clearing the cache and then launching the game without an internet connection is usually the best thing to try first when the game doesn't launch.