I seem to have a reoccurring issue with multiple mod-packs. When a handful of mod-packs finally load up and get past the Mojang screen I'm stuck with a weird, black screen. But its not completely black. There is a little small box in the left hand window that shows a bit of a world rotating. I can also hear music. I also am able to click where buttons like Single-player, Multiplayer, Options and such would be. When I click in these areas on the black screen I hear the noise it would normally make, the loud click. But to save my life I can't seem to get rid of this black screen.