What this means is that something you did to install Forge made your game crash. That's what everyone has been saying so far as well. You, unfortunately, have screwed up installed Forge.
1. Download the newest version of Forge.
2. Force update your MC, so you get a clean jar.
3. For easiest mod installs ever, download newest version of MulitMC, and proceed to step 4.
4. Follow directions to set up MultiMC.
5. Choose your instance in MultiMC, and go to "Edit Mods".
6. Put the forge .zip in the Jar Mods section.
7. Rebuild jar.
8. Enjoy.
9. Stop being a whiny bitch.
10. Click the "Thank You" button on this post.
STILL NOT WORKS! :'(