[Gimp-docs] Validation error

[Kolbjørn Stuestøl <kolbjoern stuestoel no>]

I tryed to update Julien's latest (and as usual excellent) enhances, but 
when validating my translation I got this error messages:

Command: make validate-nn
From log file:

   -:41998: namespace error : Namespace prefix xi on include is not defined
      <xi:include href="light-and-shadow/apply_lens.xml"/>
                                                        ^
   -:41998: element xi:include: validity error : No declaration for
   attribute href of element xi:include
      <xi:include href="light-and-shadow/apply_lens.xml"/>
                                                        ^
   -:41998: element xi:include: validity error : No declaration for
   element xi:include
      <xi:include href="light-and-shadow/apply_lens.xml"/>
                                                          ^
   -:42077: element sect1: validity error : Element sect1 content does
   not follow the DTD, expecting (sect1info? , […] )
   </sect1>
            ^

I think I once fixed such messages myself, but alas it is a long time 
and a few computers ago and I have forgotten how I did it. No logs either.
Someone remember?
There are two main errors:
1. line 41998: namespace error etc.
2. line 43077: sect1 validity error

I run make xml-en and then make validate-en.
No errors.

Kolbjørn