This is a picture of my screen. The video still plays fine, but as you can see, the content in the timeline has disappeared half way down which also means that I cannot change the duration of those layers. The content is still playable. The last layer with content is actually 1/2 showing and 1/2 invisible. I have tried the usual reboot, I cannot see any difference on the left side for the layers that show and those that don't. I only installed windows 10 yesterday and everything worked great for the first day of work. I have a deadline and right now I am pretty much stuck.