I have the same issue.
How do I delete it? All I see is Enable (I disabled it) or Edit from the dropdown.

You should enable debug mode in vBulletin's config.php to be able to delete it.

worked once I deleted the htaccess file in the data folder. How is Google supposed to access the sitemap with that there?! I quote: "deny from all"

Edit: it seems I didn't look closely enough at this, see my post below.

You should submit forums/sitemap_index.xml.gz link, not forums/vbseo_sitemap/data/sitemap_index.xml.gz

Ahhh, OK I see the rewrite rule in the htaccess file. Thanks.

Fails to create my sitemap:

[SECTION START] blog tags [3,061.0Kb mem used] [847,775s (+53s)]
[create sitemap file] filename: sitemap_51.xml.gz, number of urls: 1 [3,062.2Kb mem used] [847,775s (+0s)]
[create sitemap in text format] part #52 [3,062.2Kb mem used] [847,775s (+0s)]
[create sitemap index] filename: sitemap_index.xml.gz, number of sitemaps: 51 [3,085.3Kb mem used] [847,775s (+0s)]

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 8388608 bytes) in /home/fpppp/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 1537

do u have to have vbseo 3.x instaled to use this?

thanks

What is this option?

[SECTION START] blog tags [4,895.8Kb mem used] [647,105s (+647,068s)]
[create sitemap index] filename: sitemap_index.xml.gz, number of sitemaps: 6 [4,898.9Kb mem used] [647,105s (+0s)]

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 12320768 bytes) in /home/myuser/public_html/vbseo_sitemap/vbseo_sitemap_functions.php on line 1537

You should disable Text sitemap option, remove *.gz files from data/ folder and regenerate sitemap.