I have had repeated crashes tonight. I'm tired, its late, and I don't know the steps to reproduce. The only thing I can say is that a couple of the crashes I was building a collection or trying to open a book from the library. Also, my newly created layout didn't open on restart... only it did. Kind of. The layout that opened was the previous layout, but instead of being named the old name, it had the new name. At no time was the old layout named the new layout.
Here are some logs.
8475.LogosLogs.20160406-002243.zip
3247.LogosLogs.20160406-002829.zip