Hm. I'm curious what, if anything, is in the JavaScript console when this project is stuck on "Opening". If you're using Chrome, you can open the Developer Tools and click on the "Console" tab to see it (or click View -> Developer -> JavaScript Console). Would you be willing to send a screenshot of your project when it's stuck with the JavaScript console open? You can DM it to me if you'd like.
Do any other projects open for you?
Mel