I'm using the subfiles package in order to split a rather large (~80-100 pages) into smaller parts. Also, I'm collaborating with someone else and so far the package has worked perfectly. However, we are both getting this small warning when typesetting:
/usr/local/texlive/2013/texmf-dist/tex/latex/oberdiek/auxhook.sty: Package auxhook Warning: Cannot patch \document,(auxhook) using \AtBeginDocument instead.
I've searched a bit but couldn't find something specific about it.