I start the Launcher, select my modpack and I klick Play. Than the minecraft starts and closes again... My modpack: http://www.technicpack.net/modpack/details/your-first-survival-pack.324786 and my Log: https://dl.dropboxusercontent.com/u/35768160/techniclauncher_2014-04-07.log
Thanks
-signedname stolen by a wild Mankey