All, I am using: tmp $ texexec --version TeXExec 5.4.3 - ConTeXt / PRAGMA ADE 1997-2005 texexec : TeXExec 5.4.3 - ConTeXt / PRAGMA ADE 1997-2005 texutil : TeXUtil 9.0.1 - ConTeXt / PRAGMA ADE 1992-2006 tex : pdfeTeX, 3.141592-1.30.4-2.2 (Web2C 7.5.5) context : ver: 2006.03.20 10:19 cont-en : ver: 2006.03.20 10:19 fmt: 2006.3.21 mes: english cont-nl : ver: 2006.03.20 10:19 fmt: 2006.3.21 mes: dutch total run time : 3 seconds I get a blank page 2 (except for subsection title) for the following source. Thought you'd like to be aware of this. %output=pdf \starttext \setupindenting[medium,yes] \setupwhitespace[medium] \setupcolumns [verytolerant,distance=4em] \setupcolors[state=start] \defineenumeration[question] \setupenumerations [question] [location=inleft, text={\color[blue]\bgroup}, stopper={.\egroup}, way=bysection, sectionnumber=no] \defineenumeration[answer] \setupenumerations [answer] [location=inleft, text={\color[blue]\bgroup}, stopper={.\egroup}, way=bysection, sectionnumber=no] \defineblock[question,answer] \hideblocks[answer] \chapter{First Chapter} \dorecurse{1}{\input tufte\par} \section{First Section} \dorecurse{2}{\input tufte\par} \subsection{Exercises} \startcolumns[n=2] \beginquestion \startquestion[ex:1] What is the square root of $\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt\pi$ \stopanswer \endanswer \beginquestion \startquestion In exercise~\in[ex:1], we found $\sqrt{\pi}$. What is the square root of $\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{\pi}$ \stopanswer \endanswer \stopcolumns \subsection{Answers} \startcolumns[n=2] \selectblocks[answer][criterium=section] \stopcolumns \section{Second Section} \dorecurse{2}{\input tufte\par} \subsection{Exercises} \startcolumns[n=2] \beginquestion \startquestion What is the square root of $2\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{2\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $2\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{2\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $2\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{2\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $2\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{2\pi}$ \stopanswer \endanswer \stopcolumns \subsection{Answers} \startcolumns[n=2] \selectblocks[answer][criterium=section] \stopcolumns \section{Third Section} \dorecurse{2}{\input tufte\par} \subsection{Exercises} \startcolumns[n=2] \beginquestion \startquestion What is the square root of $3\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{3\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $3\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{3\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $3\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{3\pi}$ \stopanswer \endanswer \beginquestion \startquestion What is the square root of $3\pi$? \stopquestion \endquestion \beginanswer \startanswer $\sqrt{3\pi}$ \stopanswer \endanswer \stopcolumns \subsection{Answers} \startcolumns[n=2] \selectblocks[answer][criterium=section] \stopcolumns \section{Appendix} \setupenumerations[answer][sectionnumber=yes] \startcolumns[n=2] \selectblocks[answer][criterium=chapter] \stopcolumns \stoptext