This is actually the second time it's happened to me, but after launching one of my scripts through a chat event, everything on the campaign page disappeared including the grid, only showing the background color. If I left or right click the screen, it is as if the mouse buttons were stuck, so it will scroll around or mass select, though clicking again does nothing. I can start a fresh page with no apparent problems. I've disabled all of my scripts, closed the browser and cleared the cache. When I logged back in, it started to load the objects, but quickly went back to the background color only. *The stuck during click problem can be fixed by switching to the pan view tool, but the selection tool will stick again.