Hi @Anonymous,

I see that you are visiting as a new member. Welcome to the Autodesk Community!

@maxim_k is correct in pointing out that version will not run on your current operating system. So, you could consider dropping back to the OS where it did work, or consider upgrading to a current version that does work.

You might want to try a trial version of 2017 to see how well it performs for you on your slightly older Mac.

Please select the Accept as Solution button if my post solves your issue or answers your question.