I just installed IC2, and for the most part it's working great. I have currently played 4 complete days, and have traveled all around looking for sheep for a bed. The only passive mob I have seen is cows. Tons and tons of cows. IC2 is the only mod I installed, and I installed Risugami's ModLoader, Flan's ModLoaderMP, and SpaceToad's MCForge first. This is getting really annoying - has anyone else encountered this problem?
