Well seems i have a crash for. However I don't know how useful it is. Seems 1.7.10 version of IC2-Classic doesn't like Forge 1224 because it runs fine when i turned it back to 1208.
Heres the crash file regardless
http://paste.ee/p/3KyxR
Its not ic2 classic that is erroring look at line 151. It is JASCompatability.