Problem running Ruby script on Solaris 2.6


I had a few scripts that were running fine on Sparc Solaris 2.6 box.
Then I installed the latest version 1.6.7 and now I am get the following

…/server.rb:3:in `require’: No such file to load – net/http (LoadError)
from ./server.rb:3

There is a line:

require ‘net/http’

in the 3rd line of the script.

I edited the ext/Setup file as described in the documentation but
this did not help.

Any ideas what could be the problem?

Thanks in advance.