Launcher won't start my Modpack

[ChaosConjurer]

So I have this strange problem that me and my friends have been running into. I built a Modpack for us to play on and followed all of the steps in the Technic tutorial however, when I launch the Modpack the Technic launcher closes like normal but then it waits about three seconds before sending me right back to the Technic launcher screen without actually starting the Modpack. This is happening to me and my friends but only for this Modpack as we can play Blightfall and Attack of the B-Team perfectly fine without this error happening. Is there a reason why this happens? I would like any help you guys can provide. I reinstalled the Modpack three times and went through every mod installed to see if it was an error in the Modpack but I found nothing and I can play with the Modpack using forge perfectly fine without it crashing. Again any help would be awesome. Thanks ~ Ghost

Log: http://pastebin.com/C8gu9yeP
Additional Information: Windows7, 3GB of ram dedicated to the Launcher, Java 8

Edited October 30, 2016 by ChaosConjurer

[Lord Ptolemy]

1 hour ago, ChaosConjurer said:

So I have this strange problem that me and my friends have been running into. I built a Modpack for us to play on and followed all of the steps in the Technic tutorial however, when I launch the Modpack the Technic launcher closes like normal but then it waits about three seconds before sending me right back to the Technic launcher screen without actually starting the Modpack. This is happening to me and my friends but only for this Modpack as we can play Blightfall and Attack of the B-Team perfectly fine without this error happening. Is there a reason why this happens? I would like any help you guys can provide. I reinstalled the Modpack three times and went through every mod installed to see if it was an error in the Modpack but I found nothing and I can play with the Modpack using forge perfectly fine without it crashing. Again any help would be awesome. Thanks ~ Ghost

Log: http://pastebin.com/C8gu9yeP
Additional Information: Windows7, 3GB of ram dedicated to the Launcher, Java 8

[B#347] 2016/10/30 09:49:35 [INFO]  [09:49:35] [main/ERROR] [FML]: There is a binary discrepency between the expected input class ahu (ahu) and the actual class. Checksum on disk is 782b2e42, in patch 746fe971. Things are probably about to go very wrong. Did you put something into the jar file?
[B#347] 2016/10/30 09:49:35 [INFO]  [09:49:35] [main/ERROR] [FML]: The game is going to exit, because this is a critical error, and it is very improbable that the modded game will work, please obtain clean jar files.

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