Please Help with Sitemap: URGENT

After a recent update to vbulletin 3.7, I lost my sitemap. I would like to add a sitemap for google to read. How would I go about doing this?

I have the vbseo sitemap generator installed but get a series of errors, I have posted a few:

Warning: gzopen(/home/trade/public_html/forums/vbseo_sitemap/data/sitemap_1.xml.gz) [function.gzopen]: failed to open stream: Permission denied in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 540

Warning: gzopen(/home/trade/public_html/forums/vbseo_sitemap/data/urllist.txt.gz) [function.gzopen]: failed to open stream: Permission denied in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 544

Warning: gzwrite(): supplied argument is not a valid stream resource in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 554

Warning: gzwrite(): supplied argument is not a valid stream resource in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 565

Warning: gzwrite(): supplied argument is not a valid stream resource in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 568

Warning: gzwrite(): supplied argument is not a valid stream resource in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 565

Warning: gzwrite(): supplied argument is not a valid stream resource in /home/trade/public_html/forums/vbseo_sitemap/vbseo_sitemap_functions.php on line 568

What can I do to fix this and add a valid sitemap to google? Thank you.

Have you chmodded your data directory to 777?