Lewis,
I have found bug in this file. Thank you very much for your help
I have fixed it. Also I have made new version of this this module.
New features:
- you can turn on/off this module by admin area (General Settings/Google SiteMap options)
- you can add any links in sitemap.xml file by admin area
For updating just owerwrite sitemap.php file !
Thank you
Alex
UPDATED: last version on #34 post.