Thread:Project:Support desk/NORICHEDITOR error on some pages/reply

That does not sound like an error. It sounds like someone just wrote that on a page.

I'm not familar with WYSIWYG, but __NORICHEDITOR__ sounds like a magic word to disable the rich text editor on that page. The #ifeq: is part of Extension:ParserFunctions (If you don't have parser functions installed, you should install it).