Google warning help

I'm getting the following warning from google after submitting sitemaps for my websites. 'URLs not followed
When we tested a sample of URLs from your Sitemap, we found that some URLs redirect to other locations. We recommend that your Sitemap contain URLs that point to the final destination (the redirect target) instead of redirecting to another URL'
I'm using the RAGE sitemap tool to build and submit my sitemap. Can anyone advise what may cause this warning or how I may be able to remedy this so that Google is my friend again?