It seems .specification file is not forward compatible with rubygems 1.8.10 : cd /usr/share/redmine/vendor/gems rm rubytree-0.5.2/.specification rake gems:refresh_specs does the job.
I'll update .specification in package today. Jérémy. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

