[SOLVED] store_sitemap path problem

[Snowhog]

In our vBulletin forum (version 4.1.10) the store_sitemap directory is located at:

/srv/www/kubuntuforums.net/public_html/store_sitemap

store_sitemap has these attributes: drwxr-xr-x

When using the full path above in ACP > XML Sitemap > Sitemap File Path vBulletin complains with the following:

Error:
You did not enter a valid value for this setting.

I've Googled on this, and there are quite a few relevant hits, but no solid solutions. So what am I doing incorrectly?

[Snowhog]

I don't bump my posts, but I don't want this to drop off of the front page. Is there no one who has dealt with this issue and can help me solve it?

--------------- Added [DATE]1338266441[/DATE] at [TIME]1338266441[/TIME] ---------------

Okay, so I had to do it the old fashioned way -- solve it myself.

The problem was one of permissions on the store_sitemap directory. I sudo chmod 777 on it, then in the ACP > XML Sitemap > Sitemap File Path I put in "store_sitemap" (without the quotes) and clicked on Save. No errors this time.