WordPress 2.5 and Google Sitemaps

I’m currently using WordPress 2.5, and I’m getting this error when I try to access my Google sitemap.

Error loading stylesheet: A network error occured loading an XSLT stylesheet:http://domain/wp-content/plugins/google-sitemap-generator/sitemap.xsl

I downloaded the file .xml file directly to see if my sitemap was working (i.e, it was getting all the new posts), and it was. I also checked my webmaster tools in Google, and it said it didn’t find any errors with my existing sitemap.

Any help would be appreciated.