There's a name conflict between Ruby Standard Library's Generator class and RubyCLR's Generator class.

E.g.

<code>
require 'generator'
require 'rubyclr'
g = Generator.new { |r| r.yield 1 }
g.next
</code>

or

<code>
require 'rubyclr'
require 'generator'
System::Collections::ArrayList.new
</code>

both fail becaus of the problem.