How do I get rid of a table doesn't exist warning? I have a Drupal 6 installation for my website, and over time, without any doing on my part, I started getting an error, below:  


  user warning: Table 'pharmtec_pharmtechinc.xmlsitemap' doesn't exist
  query: SELECT * FROM xmlsitemap WHERE type = 'node' AND id IS NULL in
  /home/pharmtec/public_html/sites/all/modules/xmlsitemap/xmlsitemap.module
  on line 544.


I have no clue what the issue is.  I did find out, though, that it does come up for both existing and new pages.  

I'm stuck because I can't update the content of the site.  When I add information and preview, it shows all the source code for the entire page, rather than just the text.  :(  

Thanks for any help you can provide.
If ok with some code, you could also try running

drupal_install_schema('xmlsitemap');


and that should recreate the xmlsitemap tables, backup db first.

more info:


xmlsitemap_install
xmlsitemap_schema