It seems our app isn't making any DB calls on a page, and that isn't getting caught by the parser. We had to add the
clause:

On line 89 of parse.rb, we had to add:

 when /^Completed in ([\S]+) .+ Rendering: ([\S]+)/ then
          next if @in_component > 0
          @request_time = $1.to_f
          @render_time = $2.to_f
          @db_time = 0.000

Which seemed to do the trick.