I can't craft IC2 specific recipes that contain any metals, such as the iron furnace or copper cables, but I can craft treetappers and rubber sheets. Melting iron, copper, or tin in a regular furnace is no problem. No crashes.
In creative mode I can build and use, but not craft iron furnaces. Basically, it seems that some of the recipes go undetected.
I'm using Forge 188.8.131.523 and IC2 2.0.334 experimental. Other mods that are installed are the Minecraft Coder Pack 8.09, Rei's Minimap, Treecapitator and bspkrsCore. Running all of it on Minecraft version 1.6.4.
If anyone could help me out, I'd appreciate it a lot.