Support Request: Install Crash

I'm having great trouble installing this mod. Every time i add IC2 1.23 jar to my mods file the game crashes after the mojang screen, an error screen pops up very brieftly then closes minecraft.

No idea what the problem is but it seems to be something in the IC2 jar. I've installed all the other required mods modloader, mod loader mp and forge and no problem with them its just as soon as i add IC2

Not sure if relevant but i've tried with IC2 1.15 and that works fine just version 1.23 that causes problems

Also this is a fresh jar i'm installing it on with no other mods.

Thanks for the help. I'm guessing it was a corrupted download as downloaded on a different computer and it's now working fine