Title: Upgrade Table Error post2cat
Last modified: August 18, 2016

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# Upgrade Table Error post2cat

 *  [subwayblogger](https://wordpress.org/support/users/subwayblogger/)
 * (@subwayblogger)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-table-error-post2cat/)
 * I just upgraded to 2.3 and now any time I save something, this is the error I
   get.
 * I think it means the tables were not set up correctly. I made some changes and
   want to rerun the upgrade, but it wont let me because it already thinks it was
   upgraded.
 * Maybe I dont have to rerun the upgrade? Does anyone have any suggestions?
 *     ```
       [Table 'thegirli_wrdp2.wp_post2cat' doesn't exist]
       SELECT cat_ID AS ID, MAX(post_modified) AS last_mod FROM <code>wp_posts</code> p LEFT JOIN <code>wp_post2cat</code> pc ON p.ID = pc.post_id LEFT JOIN <code>wp_categories</code> c ON pc.category_id = c.cat_ID WHERE post_status = 'publish' GROUP BY cat_ID
       ```
   

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Chris_K](https://wordpress.org/support/users/handysolo/)
 * (@handysolo)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-table-error-post2cat/#post-628085)
 * It means you have a plugin (or theme) that’s not WP 2.3 compatible.
 * Try disabling plugins one by one until it goes away — then you’ll know which 
   one you should check for updates.
 * Also, have a look at [http://codex.wordpress.org/Plugins/Plugin_Compatibility/2.3](http://codex.wordpress.org/Plugins/Plugin_Compatibility/2.3)
 *  Thread Starter [subwayblogger](https://wordpress.org/support/users/subwayblogger/)
 * (@subwayblogger)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-table-error-post2cat/#post-628087)
 * Yup, I just noticed the sticky post in the forum. Aparently, the snazzy new script
   that checks for plugin updates didnt notice that the Google Sitemap plugin is
   now 3.0. So I didnt think I had to upgrade, but I did.
 * As soon as I updated it, it worked.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Upgrade Table Error post2cat’ is closed to new replies.

## Tags

 * [errors](https://wordpress.org/support/topic-tag/errors/)
 * [post2cat](https://wordpress.org/support/topic-tag/post2cat/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 2 replies
 * 2 participants
 * Last reply from: [subwayblogger](https://wordpress.org/support/users/subwayblogger/)
 * Last activity: [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-table-error-post2cat/#post-628087)
 * Status: not resolved

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