shapado plugin error

[nebiros]

[2011/08/03 08:49:51.451] !! /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/date/format.rb:1037:in _parse': undefined methodgsub!' for 2011-07-25 04:12:12 UTC:Time (NoMethodError)
[2011/08/03 08:49:51.451] !! /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/time.rb:261:in parse' [2011/08/03 08:49:51.452] !! /home/jfalvarez/projects/ninja-bot/lib/../plugins/shapado.rb:51:inparse_feed'
[2011/08/03 08:49:51.452] !! /home/jfalvarez/projects/ninja-bot/lib/../plugins/shapado.rb:18:in block in find_question' [2011/08/03 08:49:51.452] !! /home/jfalvarez/projects/ninja-bot/lib/../plugins/shapado.rb:15:ineach'
[2011/08/03 08:49:51.452] !! /home/jfalvarez/projects/ninja-bot/lib/../plugins/shapado.rb:15:in find_question' [2011/08/03 08:49:51.452] !! /usr/local/rvm/gems/ruby-1.9.2-p290/gems/cinch-1.1.3/lib/cinch/plugin.rb:234:inblock (5 levels) in __register_with_bot'
[2011/08/03 08:49:51.452] !! /usr/local/rvm/gems/ruby-1.9.2-p290/gems/cinch-1.1.3/lib/cinch/plugin.rb:242:in call' [2011/08/03 08:49:51.452] !! /usr/local/rvm/gems/ruby-1.9.2-p290/gems/cinch-1.1.3/lib/cinch/plugin.rb:242:inblock (5 levels) in __register_with_bot'