I installed the latest version of Ruby and WideStudio (Ruby 1.8.4 and
WideStudio 3.94-1).

I also installed the Ruby that came with WideStudio (Ruby 1.8.0).

So now I have two versions of Ruby and only the one that came with
WideStudio works with WideStudio.  So my question is, what's the
difference?  I would like to use WideStudio but I would hate to be tied
into using a special version of Ruby.