Yes i have never come across a pack that i was unable to launch before and i have played quite a few packs. Once i get home i will start experementing with disabling mods from the pack to see if i can pinpoint which mod it is thats causing the problem (assuming its a single mod) Once i get home i can.
let me think... tekkit classic, hexit, ftb ultamate, magic world 2, tech world 2, regrowth, crash landing, argarian skies, agrarian skies 2, project ozone, dark trilogy, void world, oblivion, civilization, infinity, ftb monster, horizons, ftb unstable, volts, tekkit legends (my personal favorite), galactic science, bee happy, B team, Pixelmon, Direwolf20, and i am planning on doing C team but haven't gotten around to it yet. And more packs than that that i cannot remember right now. -edit oh and magequest
1.3.4 i think was the update that started this all. no this is still broken all the versions of forge that dont give a (higher version of forge needed) message have the same problem
I have a feeling that it was either opencomputers or ars magica that messed it up, but i have played with ars before just not this version and i cannot recall ever playing with opencomputers. but those are both mods with enough stuff to potentially cause a problem sure il try that when i get home, the curse launcher has a really easy way to switch versions il use that, it should work the same as the mym launcher.