Upgraded from Win XP to Win 7 and downloaded/installed latest XML-Sitemap.  Get the following message when I run Sitemap

"Please wait. Sitemap generation in progress...

Proxy Error

The proxy server received an invalid response from an upstream server.

The proxy server could not handle the request GET /generator/index.php.

Reason: Error reading from remote server"

The program appears to run and generate the sitemap.xml and ror.xml as well as the mobil version.

Permissions for the .xml files are 666, Data directory 777


it looks like connection times out while generator is crawling the site. As long as sitemap is created, it's not a problem and you can simply ignore this message.
Thanks.  We'll live with it.