If the browser crashes, it's not a problem with C2. Either you used too much memory, or the bug is in the browser. See the bug report FAQ about reporting issues in browsers. Closing.
I did some more testing. I deleted everything but the title layout in the old C2 project that was having the problem, and recreated everything in the title layout from scratch in a new C2 project. The new one works fine in Safari, and the old project still crashes Safari. They are identical (same images, and events, no third party plugins). Tests:
Whatever might be causing the problem, I just thought you might like to know about it.