OFX-parser

I am trying to parser a ofx file .I have installed ofx-parser gem. But I am getting error: no such file to load -- hpricot_scan

I have checked my gem folder ,I have got hpricot-0.8.1 which is > hpricot-0.6(requirement of ofx-parser)..

My code in the General controller look like

require 'rubygems' require 'ofx-parser'

def testing   ofx = OfxParser::OfxParser.parse(open("C:\\statement.ofx")) end