It still modifies forge, which can cause mods to crash. Remove optifine and try again.
I don't think so sir. I have Bibliocraft, BiomesOPlenty, Damage Indicator, Minecraft Comes Alive, Not Enough Items, OceanCraft, Tree Capacitator and VoxelMap installed with Forge 1.7.2-10.12.0.1054 and Optifine_1.7.2_HD_D1... with NO problems. When I add IndustrialCraft 2 (any recent versions), it crashes. I keep hoping the next version of IC2 will solve the problem... but alas.