Thanks for reporting this. The "jump to Genesis" usually happens when you switch from one volume to another, and the new volume doesn't contain the reference you were last on. For example, if you're browsing Romans 5:8, then jump to a commentary that doesn't have an entry for Romans 5:8, it gets confused, and just jumps to Genesis 1:1. In the next version we'll try to at least get you as close to Romans 5:8 as possible.
We'd like more information on the crashes, though, if you can get it. Can you duplicate a series of steps that will cause a crash, or is it random? If so, please let us know. Thanks so much!