Version 67 crashes if the reactors are set to steam output.
Crash report follows:
java.lang.NullPointerExceptionat net.minecraftforge.fluids.FluidStack.<init>(FluidStack.java:27)
at ic2.bcIntegration.core.TileEntityNuclearReactorSteam.outputSteam(TileEntityNuclearReactorSteam.java:32)
at ic2.bcIntegration.core.TileEntityNuclearReactorSteam.sendEnergy(TileEntityNuclearReactorSteam.java:22)
at ic2.core.block.generator.tileentity.TileEntityNuclearReactor.sendEnergyToChambers(TileEntityNuclearReactor.java:445)
at ic2.core.block.generator.tileentity.TileEntityNuclearReactor.func_70316_g(TileEntityNuclearReactor.java:137)
at net.minecraft.world.World.func_72939_s(World.java:2743)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:881)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:845)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:318)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:741)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:625)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
Haven't tried the newer versions yet, and it doesn't crash if the reactoers are set to EU output.