[Ifeffit] Artemis Crashing

Hi, I was using Artemis on Mac and it crashed. Now when i try to reopen Artemis it attempts restore what i was doing from an autosave file but it becomes unresponsive and is just stuck on the screen posted below. Does anyone know how i can fix it? Do i have to uninstall and then reinstall the software? i have left it running for over an hour but it still hasn’t worked. Thanks for any help, Daniel