It goes deeper than SCS requirements for vanilla Ascension.
I can't give off-the-cuff specific information on Demogorgon component, but when I looked at SCS code last it actually looked for the presence of BP. If it found BP installed, it would gut the entire contents of the BP custom script and replace it with its own code (in the name of compatibility, no less). There's a very likely chance, as such, this has nothing to do with BP and all to do with SCS. I recommend removing the SCS component, and seeing if that helps. I don't recall any reports of 'just BP' errors for this in a very long time, and then it was with the Wand of Orcus installed (long ago, before it was added to the area with proper code).