[Radiant] Gallery extension shows only 10 galleries...

[Artur Baldyga]

Everything was going fine on one instance of Radiant (exactly test one). 
But when I wanted to upgrade the extension on main instance of my 
Radiant.
I made following steps:
1. Remove old gallery(0.2.0) folder form extensions folder.
2. Copy new one(0.5.3) to the extensions folder.
3. rake radiant:extensions:gallery:install

I got such an error when i clicked on Galleries tab in my panel.
ActionView::TemplateError (undefined method `children' for 
#<Gallery:0x41446664>) on line #2 of 
vendor/extensions/gallery/app/views/admin/gallery/_gallery.rhtml:
1: <%
2: count = gallery.children.count
3: children = count > 0
4: level = gallery.ancestors.size
5: padding_left = (level * 22) + 4

    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/activerecord/lib/active_record/base.rb:1860:in 
`method_missing'
    /var/www/localhost/ror/radiant/vendor/extensions/gallery/app/views/admin/gallery/_gallery.rhtml:2:in 
`_run_rhtml_47vendor47extensions47gallery47app47views47admin47gallery47_gallery46rhtml'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:326:in 
`send'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:326:in 
`compile_and_render_template'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:301:in 
`render_template'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:260:in 
`render_file'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:275:in 
`render'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/partials.rb:59:in 
`render_partial'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:30:in 
`benchmark'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/partials.rb:58:in 
`render_partial'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/partials.rb:73:in 
`render_partial_collection'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/activesupport/lib/active_support/inflector.rb:250:in 
`each_with_index'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/partials.rb:71:in 
`each'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/partials.rb:71:in 
`each_with_index'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/partials.rb:71:in 
`render_partial_collection'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:285:in 
`render'
    /var/www/localhost/ror/radiant/vendor/extensions/gallery/app/views/admin/gallery/list.rhtml:16:in 
`_run_rhtml_47vendor47extensions47gallery47app47views47admin47gallery47list46rhtml'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:326:in 
`send'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:326:in 
`compile_and_render_template'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:301:in 
`render_template'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_view/base.rb:260:in 
`render_file'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:806:in 
`render_file'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:738:in 
`render_with_no_layout'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:863:in 
`render_without_layout'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:798:in 
`render_action'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:748:in 
`render_with_no_layout'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/activesupport/lib/active_support/deprecation.rb:44:in 
`silence'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:747:in 
`render_with_no_layout'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/layout.rb:244:in 
`render_without_benchmark'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:50:in 
`render'
    /usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:50:in 
`render'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/extensions/gallery/app/controllers/admin/gallery_controller.rb:14:in 
`index'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:1095:in 
`send'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:1095:in 
`perform_action_without_filters'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:632:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:638:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:438:in 
`call'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:637:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:638:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:438:in 
`call'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:637:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:638:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:438:in 
`call'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:637:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:638:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:438:in 
`call'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:637:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:638:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:438:in 
`call'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:637:in 
`call_filter'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:619:in 
`perform_action_without_benchmark'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:66:in 
`perform_action_without_rescue'
    /usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:66:in 
`perform_action_without_rescue'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/rescue.rb:83:in 
`perform_action'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:430:in 
`send'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:430:in 
`process_without_filters'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/filters.rb:624:in 
`process_without_session_management_support'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/session_management.rb:114:in 
`process'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/base.rb:330:in 
`process'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/dispatcher.rb:41:in 
`dispatch'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:168:in 
`process_request'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:143:in 
`process_each_request!'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:109:in 
`with_signal_handler'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:142:in 
`process_each_request!'
    /usr/lib/ruby/site_ruby/1.8/fcgi.rb:600:in `each_cgi'
    /usr/lib/ruby/site_ruby/1.8/fcgi.rb:597:in `each'
    /usr/lib/ruby/site_ruby/1.8/fcgi.rb:597:in `each_cgi'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:141:in 
`process_each_request!'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:55:in 
`process!'
    /usr/lib/ruby/gems/1.8/gems/radiant-0.6.1/vendor/rails/railties/lib/fcgi_handler.rb:25:in 
`process!'
    /var/www/localhost/ror/radiant/public/dispatch.fcgi:24

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