I am not sure why, but I got the same dialog box and I re-installed it. Now my fences won't 'roll-up' and I don't see an option to make it work. However, I am grateful for the Screenshot function, because it took all of my icons and moved them back to the original containers.
I will wait for the moment - I already just spent about an hour trying to figure out the problem.
edit: I think I need to say what I was doing when this happened. I noticed my 'main' hard drive was getting full and I went to find out the large files. Turns out I had about 4.5 gb worth of installers from Nvidia - after a search online said it was fine to delete this - I did. I then ran CCleaner like I did every other day or three. By chance, I had just uninstalled OneDrive app only to re-up it so that I could change drives from my C: to another partition on another drive worth about 3 gb.
After the CCleaner though - that is when my fences stopped and I had to re-download it and install it. I used the 'snapshot' feature and all was returned where it should be (mostly), but it no longer rolls up.