I've been struggling with this for some time. I've installed Rails 3, gem, mysql on my Snow Leopard machine. All was going well until I created my first project and tried to run rails server Upon running this I get: jontybrook$ rails server /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not lo