I'm not sure what the issue is offhand. Are you able to open another
simpler xml workspace document?
Also I can't tell from the info which version of the software you are
running, and if you have Excel installed. To me it looks like an issue with
the Excel install, which might also be complicated by non-English version
of Windows, I'm not sure.
There's a new version at
http://www.arcgis.com/home/item.html?id=9ea218ff575f4a5195e01a2cae03a0ae
that includes enhanced validation. I don't think that would address your
specific issue, but you might try that along with making sure that you can
do a basic export/import from a Geodatabase.