I had no problems using WPAU to upgrade to 2.3.1. However, I now have many problems that I never had before.
For example, when I hit the "Save and Continue Editing" button, it does save the draft post, but I am not taken back to the post. Instead, I get this error message:
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WordPress database error: [Table 'thewriu3_wrdp1.wp_post2cat' doesn't exist] SELECT cat_ID AS ID, MAX(post_modified) AS last_mod FROM `wp_posts` p LEFT JOIN `wp_post2cat` pc ON p.ID = pc.post_id LEFT JOIN `wp_categories` c ON pc.category_id = c.cat_ID WHERE post_status = 'publish' GROUP BY cat_ID _______________
I also get this error message when I click on "Save" or "Publish." The requested actions are taken, but the above error message appears. It is very annoying and cumbersome.
It has also broken the backup system that was in place. The backup works successfully, but I get an error message stating the system failed to email the backup to my email address.
This is all causing problems for me, and I will not use WPAU on other sites.