Hi, This morning, I wanted to upgrade my rubygems install : 0.9.0 -> 0.9.1 I've launched "ruby setup.rb" as root and got that at the end : hook /var/www/rubygems-0.9.1/./post-install.rb failed: Invalid argument - sources-0.0.1.gem Try 'ruby setup.rb --help' for detailed usage. I've messed with rubygems files trying to delete it and do a fresh install but now I don't have any working version of rubygems. It's the same if I try to re-install rubygems 0.9.0. I'm on Debian testing. Thanks for any help ! -- Posted via http://www.ruby-forum.com/.