I'm experiencing the same problem. When shift clicking the Electric furnace or the macinator.
Code
[SEVERE] Unexpected exception
java.lang.NoSuchMethodError: ic2.common.ContainerIC2.a(Lhm;IIZ)Z
at ic2.common.ContainerIC2.transferToSlots(ContainerIC2.java:108)
at ic2.common.ContainerIC2.a(ContainerIC2.java:61)
at df.a(SourceFile:108)
at iw.a(NetServerHandler.java:603)
at my.a(SourceFile:28)
at ma.b(SourceFile:272)
at iw.a(NetServerHandler.java:45)
at dr.a(SourceFile:108)
at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:369)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:287)
at ce.run(SourceFile:417)Please further specify:
-Used Mods on server :
IC2 1.337b and Buildcraft 2.2.5 (everything)
-Which slot you exactly clicked :
I clicked the slot for item to be processed and the slot for the end product. (tested both)
-Which slots contained exactly which itemstacks (amount, type): This is for the macinator. don't remember what was in the furnace.
cobber ore, 6 and cobber dust 4 on the first crash. and cobber ore 4 , cobber dust 6 on the 2nd crash.
I can reproduce this bug easy.