Dunewolfz
He-who-has-no-morals-or-sense-of-logic.
No, the only file I deleted was the META-INF file in the jar. Then I installed forge, then Galacticraft.
Alright, then...
you installed them both manually, I'll presume.
http://www.minecraftforum.net/topic/939149-launcher-magic-launcher-116-mods-options-profiles-news/
^try using that, and see if that window still appears.
If it does then Micdoodle will have to help here, because I'm out of logical options.