Did you read the modpack information and description?
This modpack doesnt support removing mods. If you will remove some mod it can break the rest of changed recipes.
So if you dont want a mod in there its up to you to change the needed stuff. Someone could go and said I tried to remove GC and it broke every recipe.
And after bit of testing you can use both BoP and EBXL (you will probably need to remove the EXBXL config file, to reset the Biome IDs)
hmm. well, odd. i don't argue with removing mods is not supported, just making it output GT gems directly seems better than having the GT unfication thing do it, imo, and it doesn't have any drawbacks that i can think of. also, what do you mean, EXBXL works? do you mean have both it and BOP loaded? seems odd, because i didn't think you could have both generating their biomes at the same time. (they prolly fixed that tho)[DOUBLEPOST=1411843952][/DOUBLEPOST]
also, this seems to be the only problem with removing BOP. if it used the GT gems by default, biome mods could be switched withought much of a problem
(from what i can see. there may be more bop stuff i can't find)