"Toulouse, France, where a council was held in 1229. And, yes, that council dealt with the Bible. It was organized in reaction to the Albigensian or Catharist heresy, which held that there are two gods and that marriage is evil because all matter (and thus physical flesh) is evil. From this the heretics concluded that fornication could be no sin, and they even encouraged suicide among their members. In order to promulgate their sect, the Albigensians published an inaccurate translation of the Bible in the vernacular language (rather like the Jehovah’s Witnesses of today publishing their severely flawed New World Translation of the Bible, which has been deliberately mistranslated to support the sect’s claims). Had it been an accurate translation, the Church would not have been concerned. Vernacular versions had been appearing for centuries. But what came from the hands of the Albigensians was an adulterated Bible. The bishops at Toulouse forbade the reading of it because it was inaccurate. In this they were caring for their flocks, just as a Protestant minister of today might tell his flock not to read the Jehovah’s Witnesses’ New World Translation"
http://www.catholic.com/tracts/catholic-inventions