It is already the second time I read somewhere that while Christianity emerged from Judaism and in the early Church Judeo-Christians (Jewish Christians, Hebrew Christians), led by James, brother of Jesus, were "full-fledged" Christians (alongside Christians not springing from Judaism, led by Paul the Apostle), soon the ways of Judeo-Christians and "mainstream" Christianity were parting more and more, with Judeo-Christians being officialy condemned by the time The First Council of Nicaea has finished(source). I've even read claims that Judeo-Christians had to flee the Roman Empire from the persecution of Orthodox Christians(source).
What were the causes of this break-up?