I don't know what caused it, but whenever I start a new project on SFM, the viewport is either completely white or sometimes gray, rather than black with the traditional "No Map Loaded" text. When I try to load a map, I get a blank tab saying "Select .BSP File," even though there's nothing in the tab, even a search bar. I've had this problem before, and ended up reinstalling the application completely. How do I fix this?