Install of passenger/nginx fails on LinuxMint 14

[Gerry Brown]

When I try to run "passenger-install-nginx-module" it goes through and downloads the nginx file, but then it crashes with the error message: "Compiling Passenger support files...

# /usr/local/bin/ruby /usr/local/bin/rake nginx:clean nginx RELEASE=yes

rake aborted!

cannot load such file -- rubygems/builder

(See full trace by running task with --trace)"

I don't have a "rubygems" directory on my system even though I have added all gems via "sudo gem install gem-name" 

Any ideas???

Thanks.

[Hongli Lai]

Are you using Ruby 2.0? Ruby 2.0 is supported since Phusion Passenger 4.0.0 RC 4 (you need to install this with 'gem install passenger --pre').