Re: UFE => Unity2017.X ?!
It could take some time. Back when Unity 5 first released, UFE wasn't compatible with it for a while, and eventually got a patch to support it.
Re: UFE => Unity2017.X ?!
Update: I've currently been testing a fresh copy the most recent version of UFE Bundle on Unity 2017.1.0f3, and I currently haven't encountered any crashes of any kind, in editor or in game. This is on Windows build platform.
Re: UFE => Unity2017.X ?!
So is UFE ok with the 2017 version?
From my time using it on that version, it works, but I'd still be careful on deciding to migrate your project to it, seeing as there have been users on the forums having issues with it.