Selecting Windows store in Build settings freezes window

I'm trying to configure a new project for the Hololens. When I installed Unity I checked everything related to Windows Store in the installer (there were two things, I think). When I bring up build settings and click on "Windows Store", it freezes the window in the state you can see on my screenshot: a windows store icon in the top left corner of the window with a few weird white and black pixels, and the rest of it just stops updating. If I try resizing the window, it just goes black except for that icon and the stray pixels.

I have Windows 8.1 Pro if it matters.