[Nitro] Can't start app with nitro

[Les Pruszynski]

Hello John,
I think I wasn't clear first time round. I can indeed launch the  
examples applications via
ruby -rubygems app.rb. That works OK.

However, the new command nitro that is supposed to do the same thing  
does not work for me.

I can live without it but was just curious whether anybody else has  
got the same problem with the nitro command.
Les