I’ve had some frequent crashes in 4.5 when trying to call certain nodes in some blueprints sometimes. It’s a real pain. 4.5 seems to be a lot less stable than 4.4, but the features makes it worth it. Just save a lot! I’d still of course prefer to not have to relaunch my game every 20 minutes (not an exaggeration) or copy nodes from other blueprints instead of simply calling them. Not to mention context sensitivity is kinda fubar release. Why do I have to turn off context sensitivity to access get Actor Location?
In my opinion, Epic should focus on forward hybrid rendering, polishing UMG and minimising random crashes. Of course is just my opinion 