simple_app bug

simple_app.rb

class VoipRateApp < Netzke::Basepack::SimpleApp

  def configuration
    orig = super
    orig.merge(:items => [{
      :region => :center,
      :class_name => "Basepack::GridPanel",
      :model => "Rate",
      :enable_edit_in_form => false,
      :rows_per_page => 50,
      :title => "VoIP rates",
      :columns => [{ :name => :destination, :flex =>1}, :prefix, :price]
    }])
  end
end