I'd suspect not a MM or CC bug itself, but that a MM script in Kerbalism was matching against some 4th mod that @Gordon Dry has.  Maybe something to do with a mod that has or mods ModuleScienceLab.  Also, the form of the node reported, is that saying it was matching against multiple and nested ModuleScienceLab's ?  Considering there's edge case bugs like the one below, could be something similar.