I am having the same problems but with different mods! I only have 7 and they are : Twilight forest Mod, Biomes O Plenty mod, Disease craft beta, Item Physic's Full version (not lite), NEI, the More ores mod, and Magical crops mod. I tested it in the Normal Minecraft Launcher and it worked completely fine! But when I press play on the Technic launcher it goes through its normal routine then closes the launcher half- a millesecond later opens the launcher again! I have know idea whats going but heres the link:
http://api.technicpack.net/modpack/the-plentiful-mods-modpack
if you could be so kind and help me out, I appreciate and welcome anyones help.