Ironruby core - Aug 2010 - Using List boxes and Combo Boxes in Ruby on Steel

I have just started using Ruby on Steel to create GUI

When I simply drag and drop a list box and add some items in the Form
and then
click Ruby Run Menu, I get the following error message

:0:in `InitializeComponent'': wrong number or type of arguments for
`AddRange'' (ArgumentError)
  from Snippets:0:in `main''
  from Snippets:0:in `Initialize''

Can anyone please help me how to solve the problem

Thanks,
navin
-- 
Posted via http://www.ruby-forum.com/.