I guess it have to do with the browser. I used to surf facebook through Firefox, but when it went awry, I changed to Chrome for my FB needs and I don't really have much problem there. Just now, I tried downloading a beatmap with Firefox, and all it shows was the blank page. When I downloaded the same beatmap through Chrome, it went on smoothly. Let's see if I'm going to download more beatmaps smoothly from Chrome.
(Then again, see if updating your Firefox work.)
EDIT: Apparently, it's a negative to me. When I downloaded another beatmap, it went into that blank page again. >.<
(Then again, see if updating your Firefox work.)
EDIT: Apparently, it's a negative to me. When I downloaded another beatmap, it went into that blank page again. >.<