Yeah I know, not the most stable setup in the world. Running 2 preview products. But I am curious if it is possible my issues are caused by just doing an upgrade instead of a clean install. So in Word 2016 preview one repeatable issue I have is that there is no print preview. Excel 2016 is much worse off, although there is a print preview. Every single time I try to use the split screen feature it crashes. Also just crashes randomly. I will more than likely just go back to Yosemite. But if there is anyone else running Office 2016 preview with El Capitan, with no issues that could push me to try a clean install. Other than that, it is working pretty well. I am a 2012 rMPB and although Yosemite wasn't slow, this is a very very nice bump in performance.