gistfile1.txt

→ sudo gem install --no-ri --no-rdoc --backtrace railties/pkg/rails-3.0.pre.gem         
ERROR:  While executing gem ... (TypeError)
    can't dup NilClass
	/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/pathname.rb:205:in `dup'
	/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/pathname.rb:205:in `initialize'
	(erb):2:in `new'
	(erb):2:in `app_script_text'
	/Users/mutle/.gem/ruby/1.8/gems/bundler-0.7.0.pre/lib/bundler/gem_ext.rb:9:in `app_script_text'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:351:in `generate_bin_script'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:350:in `open'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:350:in `generate_bin_script'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:327:in `generate_bin'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:320:in `each'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:320:in `generate_bin'
	/Library/Ruby/Site/1.8/rubygems/installer.rb:218:in `install'
	/Library/Ruby/Site/1.8/rubygems/dependency_installer.rb:252:in `install'
	/Library/Ruby/Site/1.8/rubygems/dependency_installer.rb:222:in `each'
	/Library/Ruby/Site/1.8/rubygems/dependency_installer.rb:222:in `install'
	/Library/Ruby/Site/1.8/rubygems/commands/install_command.rb:118:in `execute'
	/Library/Ruby/Site/1.8/rubygems/commands/install_command.rb:115:in `each'
	/Library/Ruby/Site/1.8/rubygems/commands/install_command.rb:115:in `execute'
	/Library/Ruby/Site/1.8/rubygems/command.rb:257:in `invoke'
	/Library/Ruby/Site/1.8/rubygems/command_manager.rb:132:in `process_args'
	/Library/Ruby/Site/1.8/rubygems/command_manager.rb:102:in `run'
	/Library/Ruby/Site/1.8/rubygems/gem_runner.rb:58:in `run'
	/usr/bin/gem:24