A data error..., hmmm, I hadn't considered that, but I do recall that Windows and Linux handle the end of lines differently.

The first line of the XML buffer looks like this...

<?xml version="1.0" encoding="ISO-8859-1" ?>

... I am about to write the buffer to a file and see exactly what is contained within. Certainly from visual inspection, it looks perfectly sound.

Line 1 does not have 68 characters, at least, not visible, could be some trailing spaces. I'll know more when I've dumped the buffer.