Quote from iiiHuman
Also, try reducing the amount of memory you have allocated to Java from within Magic Launcher down to 512MB instead of the default 1024MB.
Yes, you are doing something wrong. See Item #7 of the "Fixing Common Problems" section of the OP.
First off, 3072MB for that setting IS WAY OVERKILL! Reduce it to 512MB instead. You'll be glad you did. If you have problems, try incrementing it a little bit at a time. I'm pretty confident you won't need to go above 1024 unless you're using something like a 512x512 pixel resolution texture pack. LOL
As for your question, yes, there is something different. When using Magic Launcher, you don't have to worry about deleting the META-INF folder from inside the minecraft.jar file. If you try to run mods with the default launcher instead (by installing mods manually), you would normally have to delete that folder first otherwise you get the black screen when using the default launcher.
First off, spoiler tags are wonderful:
[spoiler] < Stuff you want in the spoiler goes here. > [/spoiler]
Second, please provide a screenshot of your mods setup screen in Magic Launcher.
Also, make sure you update your Java and LWJGL.
I dont give a **** about the memory.
But META-INF still doesn't help me when loading my worlds. Did you see the video????