Problem with Yahoo Geocities URLs and Sitemaps

Hi,

I'm not sure how I can solve this problem. I've got a Geocities
website which can either be accessed via

http://de.geocities.com/website

or

http://de.share.geocities.com/website

I generated a sitemap for the first set of urls and didn't have a
problem for a month or so. Now I am getting the following error which
applies to the second set of urls: "URL not under Sitemap path"

Should I just put *everything* into my sitemap, even if this means
duplicates?

Google also appears to be indexing
http://de.share.geocities.com/website for some reason.

I'd be thankful for any advice.