I did try from a fresh install - a couple of times, in fact. Haven't tried just loading BC, IC and this add-on, but that's not really an option since I'm looking to add it to already-established worlds.
From the error log (and ID checker) it almost looks like it's not seeing names for some of the blocks. I don't know too much about the underlying code, but I'm still trying to troubleshoot why the build works fine except when this add-on is included.
What I think is happening is there is an error somewhere that is caught and not reported. Might be in my code, or someone elses. That's what you need to find. The error message you are seeing has nothing to do with what the real issue is.
It crashes on loading, so it doesn't matter if there are items in your world are, don't load the world, just find which combination of mods load and which do not.