> C:/DOCUME~1/ri004902/LOCALS~1/Temp/tar2rubyscript.d.2692.1/tmp.ear2rubyscript.f.
> 11594.tar/ev/rwd.rb:1175:in `system': Insecure operation - system
> (SecurityError
> )

Because "$SAFE = 2"  in ev/rwd.rb:59.

I wrote "$SAFE = 0" and could watch "Hello Warld!".

-- 
Hayato Mikami
Mail : fermikami AT gmail DOT com
Site : http://fermikami.homeunix.org/~mikami/