1146 Error After Plugins Installation

[bi11i]

I upgraded to v3.5.0rc2 about a week ago and things appear to be running just fine. Last night I got this error:

Database error in vBulletin :
Invalid SQL:
 
SELECT title, data
FROM datastore
 
WHERE title IN ('','options','bitfields','forumcache','usergroupcache','stylecache','languagecache','products','pluginlist','cron');
 
MySQL Error : Table 'vb_opiophile_org.datastore' doesn't exist Error Number : 1146
 
Date : Wednesday, September 7th 2005 @ 03:50:57 AM 
Script : http://forum.opiophile.org/login.php 
Referrer :  
IP Address : 156.153.255.126 
Username :  
Classname : vB_Database_MySQLi 

which is a little strange. I should note that last night I added a couple of plugins. I can disable these, and I'm fine with that, but I wondering if someone could give me some info to go on in tracking down what's causing the error above? The plugins I've installed are "Activity Modification", "Inferno Warning System", "AJAX Shoutbox", "Top X Stats". I only got one of these errors and have had multiple visitors to the forum since it appeared. I've not seen it again.

Any help would be greatly appreciated...[