Problem details: Suddenly, beatmaps refuse to import properly. I open the file, my cursor sits at "loading" for 10 seconds, then osu! opens and takes 5 seconds to try to import it, before handing me a "Beatmap failed to import, noving to Failed folder." error message.
Video or screenshot showing the problem: N/A
osu! version: Stable 20181231.2 (latest)
Video or screenshot showing the problem: N/A
osu! version: Stable 20181231.2 (latest)