<html> <head> <style> .hmmessage P { margin:0px; padding:0px } body.hmmessage { font-size: 10pt; font-family:Verdana } </style> </head> <body class='hmmessage'> Hi all, I am trying to run a piece of scientific software on my Macbook with Leopard. This software is Gwyddion: http://gwyddion.net/  which I have successfully installed through Macports. However when I run it from terminal I get the following: Toms-MacBook:bin tsobey$ export DISPLAY=:0 Toms-MacBook:bin tsobey$ ./gwyddion Assertion failed: (status > CAIRO_STATUS_SUCCESS && status <= CAIRO_STATUS_LAST_STATUS), function _cairo_error, file cairo.c, line 87. Abort trap Toms-MacBook:bin tsobey$ Any ideas on what might be going wrong with Cairo and what I should do about it? Thanks very much, Tom Sobey tsobey@hotmail.com Tom Sobey Doctoral Student Technical University Munich E14 - Biomolecular Systems und Bioelectronics James-Franck-Str. 1 85748 Garching <a href="mailto:tsobey@mytum.de">tsobey@mytum.de</a>  Office: +49 (0)89 2891 3814 or -3826 Lab: +49 (0)89 2891 3823 Fax: +49 (0)89 2891 3820 <a href="http://www.e14.ph.tum.de%20">www.e14.ph.tum.de </a> </body> </html>