What a pity. I never encountered any problems with the normal villages, ruins mod and bop. :/
For what it's worth. I might be able to help debugging it.
If I manage to get it running with Hexxit 2, will you consider adding it to the modpack?
Since it's update time for Hexxit, i bring this topic up again. I'd really like to see BoP in Hexxit. ExtraBiomesXL is a nice mod but the world generated with BoP is imho far better and they even have Magical Forest Biomes. (What would fit Hexxit better than this?)