Important: If you are experiencing a crash that does not match the OP’s description, please search for an existing thread that matches your crash, or make a new one, thanks!
We’re still looking into the problem that involves crashing when loading existing projects on some systems. One common thing found in the crash reports is an OS X animation sequence that may be involved with transitioning the window to Full Screen mode. Is anyone experiencing this bug not using Full Screen mode on the affected projects?
There is a way to clear the project’s display settings while it is closed. Something you could try is duplicate or zip one of the projects in Finder to create a quick backup, then right-click on it and select “Show Package Contents”. Drill down into the Settings subfolder and set aside the ui.plist file. Now try double-clicking on the project to load it.
If that works, we’d appreciate a sample of your ui.plist file so we can try and reproduce it on our machines. PM it to me as an attachment or mail it in to our tech-support, referencing this thread URL in your e-mail.
That’s an older bug from 10.10.