/home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/passenger-3.0.0/lib/ phusion_passenger/standalone/runtime_installer.rb:225:in `*': negative argument (ArgumentError) from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 225:in `show_progress' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 148:in `block in install!' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 424:in `block (2 levels) in install_passenger_support_files' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 329:in `block in run_rake_task!' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 324:in `popen' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 324:in `run_rake_task!' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 423:in `block in install_passenger_support_files' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 422:in `chdir' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 422:in `install_passenger_support_files' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/runtime_installer.rb: 144:in `install!' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/abstract_installer.rb:63:in `start' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/start_command.rb: 294:in `install_runtime' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/start_command.rb: 315:in `ensure_nginx_installed' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/start_command.rb: 59:in `run' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:93:in `block in run_command' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:48:in `block in each_command' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:43:in `each' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:43:in `each_command' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:91:in `run_command' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:62:in `run!' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/lib/phusion_passenger/standalone/main.rb:39:in `run!' from /home/ubuntu/.rvm/gems/ruby-1.9.3-p286@new_r/gems/ passenger-3.0.0/bin/passenger:32:in `<top (required)>' from /usr/local/bin/passenger:23:in `load' from /usr/local/bin/passenger:23:in `<main>'