Hey there,
I know it is in FAQ
I tried it but it still doesn't work. I tried to clear cache, erase whole .techniclauncher file and download everything(launcher.jar too(launcher.exe don't open at all so I am using launcher.jar instead)) again but nothing..
Techniclauncher I have set to 512MB and playing tekkit. But technic do the same problem.
Thanks, Hakito
(I'm sorry for broken english)