Eruby not loading *my* installed Gems

I have configured eruby with apache, successfully configured
my own RubyGems and installed my own copy of a few gems.

I can run them as testscript.rb but once embedded in an Eruby page they throw a 500 Error.

/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:18:in `require__’: no such file to load

Is there an Apache setting/command to reset the eruby.cgi to load these gems?

Any help is appreciated.