Won't start modpacks

[MasterRatch]

So I've tried installing a few different modpacks on my computer and when I click play it just reloads the launcher back up crashing. I got this in the console 

[B#308] SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
[B#308] SLF4J: Defaulting to no-operation (NOP) logger implementation
[B#308] SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

 

I don't know if anyone will be able to help with that but, I would appreciate it if anyone has any answers. ^^

[EvilOwl]

Upload the whole log from that event to http://paste.ubuntu.com/ or a similar site. Post the url.

[JHExplosiveGamer]

I'm having the same problem, I'm not sure what I'm missing, as I can't read code, maybe someone can enlighten me.  I've done updates, I've deleted old Java's and installed new Java's.  I've uninstalled TechnicLauncher, and reinstalled.  I've removed games and reinstalled games.  I've downloaded Forge.  I've updated Minecraft to 1.8.  I don't know what else to do.  Every time I press play on any of the games launcher restarts itself, but no game actually starts loading to play.  Can someone help me based on my link here for errors?

http://paste.ubuntu.com/12289153/plain/