Sideblog SQL Error

I tried to upgrade my version of sideblog and install the new version 4.2. But there’s a “fatal error on line 117” and my blog was no longer working. So i decided to re-install the previous version (3.8) but the following message appear:

————

Erreur de la base de données de WordPress : [Table ‘DBxxx.wp_post2cat’ doesn’t exist]
SELECT SQL_CALC_FOUND_ROWS DISTINCT wp_posts.* FROM wp_posts LEFT JOIN wp_post2cat ON ( wp_posts.ID = wp_post2cat.post_id) WHERE 1=1 AND post_type = ‘post’ AND (post_status = ‘publish’ OR post_status = ‘private’) ORDER BY post_date DESC LIMIT 0, 10

———–

Anybody can tell me what’s going on ??? :s

This is because of the sideblog plugin but i need it for my blog or this will not work normally.

My version of SQL is 5.0.4.5.