I have successfully upgraded to 2.0.12 and applied the Google Sitemap Add-on.
When i click on “clear the cache” and then go to the domain.com/sitemap.xml I get an error:
XML Parsing Error: no element found<br />
Location: http://www.officepinky.co.uk/sitemap.xml<br />
Line Number 42273, Column 1:
```<br />
<br />
The line number changes every time so i do not think it is a product issue.