Interesting. They've been showing some programmes about this gospel on tv lately here in DK.
Appearantly theologians more or less agree, that the first gospels were not written until some 60 to 100 years after Jesus is said to have died.
There were countless texts in circulation in the early days of Christianity, and it wasn't until some couple of hundred years later that the so-called Church-fathers decided what gospels to put into the Bible and which ones to leave out.
By this time, obviously, ALL the Christian texts had been copied and rewritten countless times already. According to the tv-programme the gospel of Judas was left out for being too gnostic (that is, among other things claiming women could lead congregations just as well as men) and forthe claim that Judas "betrayal" was a little more complicated.
The same church-fathers smeared Mary Magdalenes reputation by MAKING her a sinner. Appearantly Mary Magdalene was not a prostitute, but since more than one Mary appeared in the Bible they were all mixed into one -
All of this should be of no concern to more open-minded Christians, only to those who take the Bible literally.