Quote Originally Posted by swguy View Post
I had a strange situation I haven't seen myself before or in this thread: I installed SitemapXML locally and it worked like a charm. Installed it on the client's site and found that tools->Sitemapxml would *only* display the form to upgrade. Ran the upgrade and got the same results. Deleted SITEMAPXML_* entries from configuration and configuration_groups, went back into admin, same thing.

I fixed it by uncommenting line 14 in ./includes/modules/sitemapxml_install.php and setting it to the current version. Not sure what went wrong to get into this state though.

Code:
$current_version = '3.9.5';

I can second that, happened to me on a client's site (1.5.5e)