Hi Here's another qpdf problem I've encountered lately. Not sure if it's ConTeXt's fault (simpleslides perhaps?) or qpdf. Given the following very minimalistic examples: % slides.tex \usemodule[simpleslides][style=BigNumber,font=Helvetica] \starttext \placeTitle \stoptext %handout.tex \setuppapersize [A4][A4] % or [A4,landscape][A4,landscape] \setuplayout [header=0pt,footer=1cm,backspace=1cm,topspace=1cm,width=middle,height=middle] \setupfootertexts [presentation---\currentdate\space---\space\pagenumber] \starttext \combinepages[slides][nx=2,ny=3,frame=on] \stoptext context slides.tex && qpdf --linearize slides.pdf slidesout.pdf => results in the expected outputs context handout.tex => compiles fine and output is as expected qpdf --linearize handout.pdf handoutout.pdf => aborts with the following error: object stream 21 (object 31 0, file position 1601): unknown token while reading object (nullnullnullnull) All with context beta 2011.05.01 and luatex r4233 Can anyone confirm this? Any thoughts? Adam