I am trying to use GiNaC in, GNU Octave, an interactive scripting language used primarily for numerical analysis. Below, I provide some output from octave. Can you provide any clues as to what I may be doing to make the following assertion to fail? What can I do to fix it? octave:1> symbols installing ex type at type-id = 18 installing sym type at type-id = 19 installing vpa type at type-id = 20 octave:2> page_screen_output = 0; octave:3> x = sym("x") x = x octave:4> x^2 octave: basic.h:77: GiNaC::basic::~basic(): Assertion `(!(flags & status_flags::dynallocated))||(refcount==0)' failed. -- Ben Sapp Los Alamos National Laboratory email: <mailto:bsapp@lanl.gov> Phone: (505)667-3277 Fax: (505)665-7920 URL: http://www.neutrino.lanl.gov/ -- - To UNSUBSCRIBE, email to ginac-list@ginac.de with a subject of "unsubscribe".