A temporary solution is of course to use the FORMER version of the CBC package.
To do so, please type : sage -f http://www-sop.inria.fr/members/Nathann.Cohen/cbc-2.3.p0.spkg But these early versions of MixedIntegerLinearProgram have been updated much since, so the best way for you is still to download the next version of Sage as soon as possible, and install with it the current version of CBC ( downloadable there : http://sagemath.org/packages/optional/ ) Thank you for your interest in this class !! :-) Nathann -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org