What is wrong with my sitemap.xml?

[tommy_mac501]

I used Googles Sitemap creator to make my sitemap.xml file, and now the sitemap tool keeps telling me there are 2 errors:

Line:2 Invalid XML attribute
The XML attribute of this tag was not recognized. Please fix it and resubmit.
Problem detected on: urlset
Attribute: schemaLocation

Line: 2 Incorrect namespace
Your Sitemap or Sitemap index file doesn't properly declare the namespace.
Problem detected on: urlset

Now, like I said, "googles" tool made the thing.. why would there be errors??