Just tested it and found a couple of problems with the GPX file.
The first is that they are not valid XML
GSAK is inserts the line below in the xsi:schemaLocation to make it valid XML
http://www.gsak.net/xmlv1/6 http://www.gsak.net/xmlv1/6/gsak.xsd
The first and probably irrelevant problem is that the email is not valid the gpx.xsd does not allow - in the domain name. It is hard to fix and can probably be ignored.
The other problem that is relevant and likely the source of the problem with c:geo from the post below is that some tags are incorrect
pgc generates for example
<gsak:gsak:County>LuleƄ</gsak:gsak:County>
and the correct GSAK one is
<gsak:County>LuleƄ</gsak:County>
The same proble on
<gsak:gsak:LastGpxDate>2015-09-19 23:10:16</gsak:gsak:LastGpxDate>
Another error is
<gsak:IsPremium>'0'</gsak:IsPremium>
and GSAK
<gsak:FavPoints>0</gsak:FavPoints>
The forth and last tag that pgc creates
<gsak:FavPoints>0</gsak:FavPoints> is correct