I think new version for mac is unstable,
Its keep hanging on following action.
Use previous version, there's nothing wrong with your SVG. I can open and run it normally. Don't use the ver.3.3, it's still buggy.
I agree that it might be a good idea to try an older version of the program, in case the newest version is causing the problems. Also, you can save a copy of your work to the cloud folder and ask customer support to provide feedback, in case your project building techniques are causing problems.