Basecamp give me a couple of errors when trying to read GPX track files.

After analyzing the GPX files with 'XML validator' (http://www.validome.org/xml/validate/) some errors where found.
For example:
Somewhere in a <ele> tag there was a timestamp
Somewhere in a <time> tag there was an elevation value
Using a Dakota 20 FW: 3.80.
Basecamp 3.1.3
I attached some recorded tracklogs.