Hi. Well... I'm from Brazil, so do not speak badly of my (Google Translate) English.
I was trying to play Tekkit, but at Technic Launcher, I get a notice of "Bad video card drivers", which does not happen on standard Minecraft.
So I thought I'd install Tekkit on the new Minecraft Launcher.
I did the procedure correctly, but when I start Minecraft, he crash.
If anyone has managed to do it, and without any error ... Please tell me.
And again sorry for my bad English.