In Wordpress site with WP-dTree 3.4.1 activated plugin have error:
[Table 'wordpressbase.wp_post2cat' doesn't exist]
SELECT wp_posts.ID ASid, wp_posts.post_title AStitle, wp_post2cat.category_id AScatidFROM wp_posts, wp_post2cat WHERE wp_post2cat.post_id = wp_posts.ID AND wp_posts.post_status = 'publish' AND wp_posts.ID != 0 AND wp_posts.post_type = 'post' ORDER BY wp_posts.post_date DESC
Incorrect detect version Wordpress in WP-dTree plugin 3.4.1 in file wp-dtree_cat-functions.php in string 66:
if((float)$wp_version < 2.3) {
To fix this error, must change this string:
if($wp_version < '2.3') {
This receipt on russian language - http://stmd.ru/archives/404
PS: 404 - just coincidence :-)