Hi, I have a big showstopper with my app: sequel with the mysql gem fails with the following error message: dyld: Symbol not found: _rb_str_freeze Referenced from: /Library/Frameworks/MacRuby.frameword/[…]/mysql_api.bundle This is mentioned on the net on the sequel project back in february. The diagnostic of the sequel developer was that this is a bug in MacRuby. I am using MacRuby nightly latest as of November 17, 2011, which reports its version as 0.12 I have mysql gem version 2.8.1 I have sequel gem version 3.29.0 Steps to reproduce in macirb: require 'ruby gems' require 'sequel' DB = Sequel.connect(:adapter => 'mysql', :user => 'root', :host => 'localhost', :database => 'test', :password => 'your password') DB.tables Is there any workaround/ easy fix? I would appreciate any suggestion, including of alternate gems to use. Jean-Denis