I think you posted in the wrong thread unless mother has released an infocenter as well -- I assume you're talking about Milquetowst' (DBurgdorf's) mod? The additional includes are for other mods from Darryl. You can leave them in or remove them, both is fine.
The last error shows that one of your files has got a closing tag </> without an opening tag <>, i.e. incorrect XML structure.