After chasing a bunch of false leads the problem was that libGL.so.1 could not be found. I fixed this by installing a lot of nvidia packages which caused a working libGL.so.1 to appear about six levels deep in symlinks related to the glx-diversions package. Not sure yet whether this was my mistake or a bug in some package. Thanks Slavek and Thierry, --Mike --------------------------------------------------------------------- To unsubscribe, e-mail: trinity-users-unsubscribe@xxxxxxxxxxxxxxxxxxxxxxxxxx For additional commands, e-mail: trinity-users-help@xxxxxxxxxxxxxxxxxxxxxxxxxx Read list messages on the web archive: http://trinity-users.pearsoncomputing.net/ Please remember not to top-post: http://trinity.pearsoncomputing.net/mailing_lists/#top-posting