I realise this is a very old post, but I have the same problem as stepsnz had:
Indelingsfout in bestand op positie
SAXParseException: '[word/document.xml line 2]: Attribute w:themeShade redefined
', Stream 'word/document.xml', Line 2, Column 70655(rij,kolom).
(which is in Dutch, but it's same)
I tried downloading the Word Viewer as mentioned here, but it still won't open.
I have LibreOffice 5.1 and Windows10.
I'm hoping acknak or someone else can help me out as well?
Would save me a lot of work to start all over creating this document...
Other tips are of course welcome as well.
Thanks in advance!