Hi, I suspect you're just running out of RAM. Not necessarily physically, but the construction Sage --> expect interface --> Maxima --> Lisp implementation is a fragile one. If the Lisp implementation "thinks" it runs out of space, this is not handled too gracefully by Maxima, and as a consequence the synchronization between Sage/the expect interface, and Maxima, gets lost more or less often.
Three options (none, or all, might help): - alter your code to do your computations in "smaller pieces" - move to a "bigger" machine - use a current Sage version (maybe the clisp ---> ecl switch does heal your problem, or the pynac switch, or ...) Good luck! Cheers, gsw --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---