Run
rubyweb
Update system
Paste the following into Terminal. If you're not using RVM, you may have to prefix gem commands with sudo.
gem update --system ;\
gem update bundler
se-builder
Install / Upgrade Ruby Console
gem uninstall -aIx web_console ;\
gem uninstall -aIx web_console ;\
gem install --no-rdoc --no-ri web_console
$ ./reset.sh