Dear all, The solution to my problem with powerdot-hyperref and ppchtex has been solved by Heiko Oderbiek. Here is his explanation and solution: ConTeXt redefines e-TeX's \unexpanded. Try \let\normalunexpanded\unexpanded \usepackage[pstricks]{m-ch-en} \let\unexpanded\normalunexpanded Hans Hagen promised to add this to the LaTeX wrapper. The next hyperref version will load a new package etexcmds as workaround. Thanks very much.. Patrice MEGRET