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