Minecraft Forums

So I've done everything to the best of my ability to fix this, Magic Launcher will open, I click login, then Mojang Screen shows up for a couple of seconds, then.. gone. It just closes, no crash message no nothing, in the logs is just shows it normally booting up then just, stops, this happened ever since I tried to put a .class directly into the 1.6.2.jar, since then MagicLauncher has been doing this, I've deleted the versions folder, magic folder, deleted all mods, redownloaded ML, what else can I do?

Please help.