Edit: You've made two threads already both asked you to provide more information or to follow the basic guide and you did not reply to either. We want to help, but if you are not going to respond to quarries for more information or reply we cannot help you.
We need a log of some sort posted to pastebin.com and linked here, preferably a console log. Go into the Options tab of the launcher and ensure that there are check marks next to 'Show Console?' and 'Reopen launcher after exiting minecraft?' Then restart the launcher. When you experience the crash close minecraft and the launcher should reopen with the info about the crash in the console. Now press the 'Paste my log to pastebin.com' button. This will add a link at the bottom of the console. Post that here so we can see your log. If the launcher/console does not reopen then check the crash reports folder inside the pack folder for a recent crash report. Paste the text from it to pastebin.com manually and post the link pastebin.com gives you here.
