When doing a Post.search 'term'

I'm getting results but it's spitting out:

NoMethodError: undefined method `-@' for nil:NilClass
        from /usr/lib64/ruby/gems/1.8/gems/Sphincter-1.0.0/lib/sphincter/search.rb:149:in `search'
        from /usr/lib64/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1309:in `sort_by'
        from /usr/lib64/ruby/gems/1.8/gems/Sphincter-1.0.0/lib/sphincter/search.rb:148:in `each'
        from /usr/lib64/ruby/gems/1.8/gems/Sphincter-1.0.0/lib/sphincter/search.rb:148:in `sort_by'
        from /usr/lib64/ruby/gems/1.8/gems/Sphincter-1.0.0/lib/sphincter/search.rb:148:in `search'
        from (irb):1

Date: 2007-11-12 23:41
Sender: Eric Hodel

Please try with Sphincter 1.1.