Help with Redmine (503 error)

I'm trying to get Redmine working with Litespeed, using the instructions on this page:

http://www.litespeedtech.com/support/wiki/doku.php?id=litespeed_wiki:ruby_rails

However, it's giving me a 503 error. I see the following in stderr.log:

2013-04-30 13:15:16.822 [STDERR] /usr/local/lsws/fcgi-bin/RackRunner.rb:13:in `require': no such file to load -- rack (LoadError)
2013-04-30 13:15:16.822 [STDERR] from /usr/local/lsws/fcgi-bin/RackRunner.rb:13

I can confirm that the rack file does not exist in /usr/local/lsws/fcgi-bin/. I also notice that RackRunner.rb is referencing lsapi which does not exist in that directory either.

I wished we were able to make Redmine work out of the box, having an updated Ruby working with cPanel / Litespeed.

I am currently an intern in an IT firm (system integration and support oriented) and I was tasked with figuring out if the transition from Redmine to OpenProject would be worth it, as well as setting up said transition if Nox Vidmate VLC it is.