Starting to get a crash on startup with Railcraft installed. When i remove the mod the crash stops.
Latest version of Railcraft is the one i have installed. 9.6.1.0

here's the crash log: http://pastebin.com/Btfzetv3

It seems this is an IC2 API issue? Poke @CovertJaguar to tell him that he might need to stop shipping IC2 API and use @Optional.Interface()?

Edit: BuildCraftCompat should not create a test world and create a tile in post init. It is always bad to make that sort of sandbox.

So just an update, did a fresh clean install, and reinstalled mods a few at a time. I did not install some of the mods i had previously, and now the game works with railcraft installed and no crashes.

The mods i removed are -

Additional Build Craft Objects
Buildcraft and Buildcraft Compat
extrautilities
mantle - was a leftover from tinkers construct that i missed when i removed TC
MFR magical crops compat
openblocks
randomthings

You mean adding any one of them will cause crash? If is that's weird.

If you can run well with all the mods except BuildCraftCompat (it depends on BuildCraft but not vice versa), it means that this is actually a BuildCraftCompat Bug.

Yeah, i havn't actually put those mods back in to test it, cause i didn't want to take the chance of corrupting the fresh install, plus i don't plan on actually using them anymore so i just left em out

Okay... I'd report it to bccompat.