Expression error: Unrecognized word "this".
Re: Expression error: Unrecognized word "this".
Fixed. The culprit was this edit by User:CurrentNews to Template:IsSpaceship, which is used in the conduit infobox. I have no clue what the purpose of this edit was (it includes a rather cryptic edit summary, which worries me) but at least now I know that "onlyinclude" and "includeonly" are not the same thing.