OK new minor release published, you need to uninstall (untick it in modules page) the old module and re-install this one.

Update:
When runing cron it will eventually display 'page not found' click the browser back button to go to your website, you will then be notified that sitemap and rss feed were created, you may also get an error 'cannot modify header information' ...
This little cosmetic problem will be fixed in the next release.

Second Update:
I had to release anothe minor release to fix the cron issue, it seemed too serious to have left for the next release.

cheers
Von Gunther