Be patient, it will come soon enough. Minecraft 1.5.1 has only just been release. Either wait for the mod developers to update it or use IC2 on minecraft 1.4.7. I have heard a few people mention there is an IC2 closed beta for 1.5.1 at the moment so it seems an update is on the horizon.
The build #276 did not seem to like rei's minimap. It worked all the way up until i tried opening the world, Then a new window popped up complaining about rei's minimap and tick errors and then it wet unresponsive.
Hey, i'm using minecraft 1.5.1 with up to 30 mods including rei's minimap, NEI and industrialcraft-2_1.115.304-lf and everything's going well for me now, is there a bug that i don't get? because the mods works well for me, including IC 2.
Just note, it crashed my Not Enough Items. When I acess ic2 in creative inventory tab, it crashed the game.
I downloaded the IC2 Test .jar and when I was in creative mode and I tried to access the IC2 Tab it crashes. It does it every time I attempt to open it. Otherwise for accessing items it works perfectly fine for me.
as a mod virtipath geek i could probably change it,nut it would take forever because this mod has an unusual program path to it,in other words, its not the type of mod im used toosee if you can succeed in this challenge......................