Rails - Apache - "Web Application could not be started"

When deploying a new rails application to a local Apache install, i seem to run into this error:

Web application could not be started It looks like Bundler could not find a gem. Maybe you didn't install all the gems that this application needs. To install your gems, please run: bundle install If that didn't work, then the problem is probably caused by your application being run under a different environment than it's supposed to. Please check the following:

A quick fix, appears to be:

Run: bundle install --path vendor/bundle

Source: http://stackoverflow.com/a/5589346/3084542