Every time I used to update WordPress I have usually gotten a similar error to the one on my site right now. And I mean EVERY time.
WPDB has not been comparable with many other plugins I prefer to use with my site. At this point I cannot even log into my site. I can login here to the support forum, but not into my site.
First, I'm hoping someone can help me to just log into the site. Though I've learned to do digital graphics and art, I'm not a techie person. Then, I'm going to delete this plugin that I paid for and am sorry I ever did.