Thanks to William for rebooting! >> update your guard with sage -combinat qselect
after updating the guards, everything worked well. Sorry for the noise. (I didn't know that I need to do that once in a while even if I keep using the same version of sage...) Best, Christian -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.