Hello, I have a MacRuby script which, among other things, requires rubygems. It works very nice when I call it in the terminal (i.e. "macruby test.rb"), but when I try to execute it in a Cocoa App using [[MacRuby sharedRuntime] evaluateFileAtPath:path];, I get a LoadError exception: /Users/below/dev/build/Debug/(eval):1:in `<main>': no such file to load -- rubygems (LoadError) How can I remedy this, and make rubygems known to the script running in my app? Thanks Alex 1) The issue is reproducible with this scrip, suggested by a user on this list. Thanks again: require 'rubygems' require 'control_tower' require 'rack/utils' server_options = { :port => 3001, :host => '0.0.0.0', :concurrent => false } app = Rack::Builder.new do map "/" do run Rack::File.new("/Users/below/Sites/") end end.to_app @s = ControlTower::Server.new(app, server_options) if @s puts 'Starting control tower webserver' @s.start else puts "ERROR: Couldnt build server" end