Yeah...infallability...here we go. The Vulgate was the source for proper canon. Let's get it right here.
The Vulgate confirmed by the Synods of Carthage in 397 and 418 weren't good enough of the church leaders....so over the years they just decided here and there to add one or two or three extra courses of material....But oh, that a reform movement upset with obvious church abuses and corruption had no right to strip those added non-inspired books from what was once only sacred, inspired scripture.
Sheesh...if your gonna try to present history at least paint a complete picture man!