Why won't Magic Launcher work?

I wanted to get the shaders mod and I tried everything but forge wouldn't allow it and kept crashing my game-.- Anyway so I got Magic Launcher to mod my game(by the way it is 1.5.2-if you are wondering), I have quite a few mods that keep me happy and shaders is one of them but because I went to 1.5.2 I had some trouble. Finally though I figured it though and had Magic Launcher logging in and working and all of my mods and forge on there. I had optifine and shaders and when I looked in options it was there, but then when I clicked on one of my worlds it just stayed on the screen loading world and doing nothing else. I escaped from full screen and then the minecraft was just a black screen, I looked everywhere for a solution but I have found nothing. I really want to play with this mod, so please any help would be appreciated.