I am having this re-currying problem every time I try to print a PDF from either Adobe Reader Touch or the included Reader program. When I set the printing options to double-sided (either flipping on short or long edge) I get a yellow error message above the selection box that says "There's a problem with this setting. Continue with the existing settings or try again." My printer is a Brother MFC-9840CDW which prints double-sided fine from Word/Publisher etc. etc. I can't seem to figure out why this is happening. Anyone else in the same boat? Any ideas?