@lomkiri --
Me again - small problem came up on my first real run
All of a sudden I got lots of errors and tracked it down to the before / after below
"www.w3" and "www.idpf.org" lost their periods
Code:
b: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops" xml:lang="en">
a: <html xmlns="http://wwww3.org/1999/xhtml" xmlns:epub="http://wwwidpforg/2007/ops" xml:lang="en">
Not sure why since "www" is lower case and should not be considered. This is the case that threw the errors, but I'm assuming that the situation could be anywhere.