Right. Not an error. Just replying to the topic. Maybe the OP needed to use 3.0.3 instead.
Can anyone tell me please, does this module automatically update the sitemap when new pages are added. If not how is the sitemap updated manually?
Whenever you publish a new or republish an existing page, SilverStripe can automatically inform Google of the change, encouraging a Google to take notice. If you install the SilverStripe Google Analytics module, you can see if Google has updated your page as a result.