Dear all, I have installed texlive2009 in place of texlive2007 and I can no longer compile programmes combining pstricks and ppchtex. The following example gives me an error (it is still working on texlive2007 on another pc) \documentclass{article} \usepackage{pstricks} \usepackage[pstricks]{m-ch-en} \listfiles \begin{document} \chemical{O_2} \startchemical \chemical[SIX,B1..6,R1..6,RZ1..3][CH_3,CH_3,OH] \stopchemical \end{document} ! Undefined control sequence. l.4441 \writestatus {loading}{ConTeXt System Macros / General} ? ! Emergency stop. l.4441 \writestatus {loading}{ConTeXt System Macros / General} End of file on the terminal! I have no idea how to cope with that error. Any help is welcome. Best regards, Patrice Patrice Mégret ________________________________ Important notification: In the context of the creation of the University of Mons, FPMs email address policy is changing from '@fpms.ac.be' to '@umons.ac.be' (or @student.fpms.ac.be to @student.umons.ac.be), please update your contact list accordingly. Note importante: Dans le cadre de la création de l'Université de Mons, la stratégie d'adresse de courrier électronique de la FPMs change de '@fpms.ac.be' à '@umons.ac.be' (ou @student.fpms.ac.be to @student.umons.ac.be), merci de mettre à jour votre liste d'adresses en conséquence.