Custom Modpack crashes on startup

[IronCake]

Hello everyone, need some help her. The title says most, my modpack wont start up. The modpack (http://www.technicpack.net/modpack/temp1.783830 (yes, I know, ignore the name, I'll change it when I thing of a good one) it just a small one with a few mods. I did get it to start up once or twice, but that was with modpack.jar missing, and then it loaded no mods. I also loaded the wrong version (1.6.4 instead of 1.7.10) I tried changing this, but to no avail. Also, the launcher doesn't count the right number of downloads/runs, and doesn't list the update I added to test that. I have java legacy fixer and mantle installed.

Any help would be welcome, thanks guys!

Ps: final Error in log: There is a binary discrepency between the expected input class ahu (ahu) and the actual class. Checksum on disk is f812af2, in patch 746fe971. Things are probably about to go very wrong. Did you put something into the jar file? (No, I didn't mess with that file)

Pps: link to modpack.zip download: https://www.dropbox.com/s/3zv2g1j5st16bms/Modpack.zip?dl=1

Edited December 27, 2015 by IronCake

[jumpandshootbeef]

Do you really need legacyjavafixer? I suggest just installing java 7 along java 8. The launcher counter updates, but not so often. From what I saw everything was allright, try updating all the mods to latest version and putting the minecraft jar in the bin folder too (respective version)