If you don't know what version of google base you are using I guess you are not using the latest version. You can go here to download it. Try that and see what happens. I had to modify one file but after that it works like a charm with zencat 1.3.9d. The errors can be corrected by changing some of the code in the Google Base Feed sanitizer. I can help you with that when the time comes if it doesn't work out of the box.
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