Hi everyone! I'ts me again!
I just updated all the mods and minecraft doesn't seem to start again -.-" I already did some tries moving the mods that could possibly conflict with each other ie arsmagica and ue, but with no results. It also has to be noticed that i added some mods i like, which are the thor mod 2 by thor597 and the mods based on powercrystalcore (ie netherores, power converters and minefactory), running them normally on the previous modpack version i used.
Anyway, here's the forge report on pastebin
http://pastebin.com/QKZyFwe5
Hope someone can help me
Regards!
Note: if someone wants to use the thor mod 2 while using also XLextrabiomes, he has got to change some biomes ID of this last one.