TypeError when copying single page

[dkreft]

Case:
Select "Copy page only" from popup menu; accept default values; click "OK" button.

Error:
TypeError (can't convert Fixnum into String):
vendor/extensions/copy_move/lib/copy_move/model.rb:8:in +' vendor/extensions/copy_move/lib/copy_move/model.rb:8:innew_slug_and_title_under'
vendor/extensions/copy_move/lib/copy_move/model.rb:20:in copy_to' vendor/extensions/copy_move/lib/copy_move/controller.rb:14:incopy_page'
radiant (0.8.2) vendor/plugins/haml/rails/./lib/sass/plugin/rails.rb:19:in `process'

Environment:
ruby 1.8.7 (2008-06-20 patchlevel 22) [i686-linux]
Rails 2.3.3
Radiant 0.8.2

Patch:

    --- a/lib/copy_move/model.rb
    +++ b/lib/copy_move/model.rb
    @@ -5,7 +5,7 @@ module CopyMove
           test_page.parent = parent
           until test_page.valid?
             index = (index || 0) + 1
    -        test_page.title = "#{title} (Copy#{' '+index if index > 1})"
    +        test_page.title = "#{title} (Copy#{' '+index.to_s if index > 1})"
             test_page.slug = "#{slug}-#{index}"
           end
           {:slug => test_page.slug, :title => test_page.title}
    @@ -43,4 +43,4 @@ module CopyMove
           self.attributes.dup.delete_if {|k,v| [:id, :parent_id].include?(k.to_sym) }
         end
       end
    -end
    \ No newline at end of file
    +end