Erb - erubis problems

Hi all, I have some problems using erb(o erubis) + cgi
I am able to use single rb files or rhtml, but when I try to use a structure
like that:

file.rb+file.eruby

I have an internal server error (500)
I know, these problems are really by newbie.

I show you my files.

···

----------
file.rb
-----------
#!/usr/bin/ruby
require 'rubygems'
require 'erubis'
input = File.read('file.eruby')
eruby = Erubis::Eruby.new(input, :trim=>false)

list = ['aaa', 'bbb', 'ccc']
puts eruby.result(binding()) ## using eruby.evaluate(...)

--------------
file.eruby
-------------
<ul>
  <% for item in list %>
  <li>
    <%= item %>
  </li>
  <% end %>
</ul>

opening file.rb in my browser (in the shell it works fine, showing me the
html code) , apache server responds to:

[error] mod_ruby: error in ruby
[error] mod_ruby:
/usr/lib/ruby/gems/1.8/gems/erubis-2.4.1/lib/erubis/evaluator.rb:62:in
`eval': Insecure operation - eval (SecurityError)
[error] mod_ruby: from
/usr/lib/ruby/gems/1.8/gems/erubis-2.4.1/lib/erubis/evaluator.rb:62:in
`result'
[error] mod_ruby: from /home/indaco/public_html/file.rb:12
[error] mod_ruby: from /usr/lib/ruby/1.8/apache/ruby-run.rb:53:in `load'
[error] mod_ruby: from /usr/lib/ruby/1.8/apache/ruby-run.rb:53:in
`handler'

-------------------------------
My httpd.conf is like:
-------------------------------

ScriptAlias /cgi-bin/ /usr/local/apache2/cgi-bin/

<IfModule mod_userdir>
   UserDir public_html
</IfModule>

<Directory /home/indaco/public_html/cgi-bin/>
        Options ExecCGI
        SetHandler cgi-script
</Directory>

<Directory /home/indaco/public_html/>
        Options ExecCGI
        SetHandler cgi-script
        AddHandler cgi-script .rb .rbx .cgi .pl
</Directory>
# If the ruby module is installed, this will be enabled.
<IfModule mod_ruby.c>
  # # for Apache::RubyRun
  RubyRequire apache/ruby-run
  # # for Apache::ERubyRun
  RubyRequire apache/eruby-run
  # # for Apache::ERbRun
  RubyRequire apache/erb-run
  # # for debug
  RubyRequire auto-reload

  # exec files under /ruby as ruby scripts.
  <Location /ruby>
    SetHandler ruby-object
    RubyHandler Apache::RubyRun.instance
    Options +ExecCGI
  </Location>

    #
  # # handle files under /eruby as eRuby files by eruby.
  <Location /eruby>
     SetHandler ruby-object
     RubyHandler Apache::ERubyRun.instance
  </Location>

   #
  # # handle files under /erb as eRuby files by ERb.
   <Location /erb>
     SetHandler ruby-object
     RubyHandler Apache::ERbRun.instance
   </Location>

  # exec *.rb as ruby scripts.
  <Files *.rb>
    SetHandler ruby-object
    RubyHandler Apache::RubyRun.instance
  </Files>

# exec *.rbx as ruby scripts.
  <Files *.rbx>
    SetHandler ruby-object
    RubyHandler Apache::RubyRun.instance
  </Files>

  #
  # # handle *.rhtml as eruby files.
   <Files *.rhtml>
     SetHandler ruby-object
     RubyHandler Apache::ERubyRun.instance
   </Files>

</IfModule>

Please help me in some way!

Thanks