Category Menu Disappears after installing Google Sitemap?

ver 1.3.8a

Yesterday installed Google Sitemap, latest version.

Today I notice that my category menu is missing ALL of it's categories. There were about 10 categories, now they are gone??
See left hand side menu

https://www.cvtreasures.com

UPDATE to thsi post:

The scary thing is the missing categories in the main Category menu is SPORADIC, one time you hit refresh and they are gone, wait a while hit refresh and they appear. Hit refresh again and they are gone again......?

https://www.cvtreasures.com

What is best/fastest way to disable Google Sitemaps?

Moderator's note: 2 related threads have been merged and moved to the Contributed add ons section.

I installed it on a relatively fresh 1.3.8a and am not experiencing any problems. Are you using a (heavily) modified template?

schoolboy:

I installed it on a relatively fresh 1.3.8a and am not experiencing any problems. Are you using a (heavily) modified template?

Not sure what you mena by "Heavily modified template" but I did just have a major redesign to my site and new template. BUt, why would this mod have an affect on the menu ?

https://www.cvtreasures.com

The test to see whether your problem is a template-related issue, is to switch your site to CLASSIC template. If the problem goes away, then it's probably related to your custom template.

I have already answered you in private, I repeat here.

1. Google Sitemap no longer supported. Use sitemapXML.
2. Google Sitemap and sitemapXML in no way connected with the menu categories. Search for a bug in a different place.
3. Just uninstall the module.
4. I looked at your site and did not see any menu categories, but saw this message:

1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'EXPECTED_PRODUCTS_SORT limit MAX_DISPLAY_UPCOMING_PRODUCTS' at line 5
in:
[select p.products_id, pd.products_name, products_date_available as date_expected, p.master_categories_id from zen1_products p, zen1_products_description pd where p.products_id = pd.products_id and p.products_status = 1 and pd.language_id = '1' and p.products_date_available >20090607235959 order by EXPECTED_PRODUCTS_FIELD EXPECTED_PRODUCTS_SORT limit MAX_DISPLAY_UPCOMING_PRODUCTS]

UPDATE :
This issue appears to be MY fault, NOT the mod itself. Apparently, after loading the mod my hosting service space limitation reached it's limit and hence produced several site errors. When I made available space errors went away.