mySQL error: wp_wordbook_userdata table does not exist

I upgraded from ver 2.5 and have a problem when creating new posts. When I first enter the subject line and it attempts to autosave, it gives this error:

WordPress database error: [Table 'koneko_wrdp3.wp_wordbook_userdata' doesn't exist]
SELECT * FROM wp_wordbook_userdata WHERE user_ID = 1

Then when I try to post anything, I get a series of errors:

WordPress database error: [Table 'koneko_wrdp3.wp_wordbook_userdata' doesn't exist]
SELECT * FROM wp_wordbook_userdata WHERE user_ID = 1

WordPress database error: [Table 'koneko_wrdp3.wp_wordbook_errorlogs' doesn't exist]
DELETE FROM wp_wordbook_errorlogs WHERE postid = 412

WordPress database error: [Table 'koneko_wrdp3.wp_wordbook_userdata' doesn't exist]
SELECT * FROM wp_wordbook_userdata WHERE user_ID = 1

I’ve seen fixes to the autosave, but I still have posting issues that originate from the same error. Funny enough, some posts have gotten through a few days ago (with the error showing), but now it doesn’t seem to be working at all.

Has anyone else encountered this problem? I appreciate any help!!