Everything was working fine before doing this last update.

I've already encountered one problems: I started a new video project including photos and videos. I had already put all the photos and videos on the timeline, so I was inserting transitions and changing the speed of some videos. At a certain point in the timeline something went wrong. Transitions were not accepted. I tried several things like deleting this part of the video, but even so the video was still there after it was deleted. I got my software closed a few times. I think I'll have to do it all over again.