Modpacks Fail to Launch on my Mac

[DeadlyPestilence]

Every time I try to launch a modpack, minecraft crashes while crafting it or before launching sometimes; however, the vanilla modpack works.

Crash Log: crash-2015-05-06_22.05.54-client.txt

crash-2015-05-06_22.22.47-client.txt

Edited May 7, 2015 by DeadlyPestilence

[Munaus]

vanilla is not a modpack, it's just vanilla.

post the log on a pastebin site, I'm not downloading anything from you

pastebin.com OR paste.ubuntu.com

[DeadlyPestilence]

vanilla is not a modpack, it's just vanilla.

post the log on a pastebin site, I'm not downloading anything from you

pastebin.com OR paste.ubuntu.com

​I know it isn't. I was referring to the vanilla minecraft listed under modpacks. Also, "Attack of the B Team" works, but none of my downloaded modpacks do.

This crash at least launches minecraft:

http://pastebin.com/Dg3NYyXg

This crash does not even generate a crash report:

http://pastebin.com/rDEDQHa7

[Munaus]

Caused by: java.lang.UnsupportedClassVersionError: ivorius/pandorasbox/PandorasBox : Unsupported major.minor version 51.0

the first log showed this error. You will only get that error from custom packs that is set up wrong. Contact the modpack author, this is not an Technic launcher issue.

 

[INFO]  java.lang.UnsupportedClassVersionError: com/almuradev/almura/core/AlmuraCoreMod : Unsupported major.minor version 51.0

the second log showed this. Again, these are custom pack issues. Take it up with the modpack author, not us.

If you are the author of said pack(s) then post on Platform Pagoda with links to your pack(s)