SQL errors from import.

[James Birkett]

I exported my SQL a couple of days ago, and it's all been fixed today (imported etc).
However, Now I get errors such as these:

Database error in vBulletin 3.8.3:

Invalid SQL:

SELECT setting.*, settinggroup.grouptitle
FROM settinggroup AS settinggroup
LEFT JOIN setting AS setting USING(grouptitle)
WHERE settinggroup.displayorder <> 0
ORDER BY settinggroup.displayorder, setting.displayorder;

MySQL Error : Got error 28 from storage engine
Error Number : 1030
Request Date : Friday, July 24th 2009 @ 06:27:44 AM
Error Date : Friday, July 24th 2009 @ 06:27:44 AM
Script : http://{site}/forum/admincp/options.php?null=0
Referrer : http://{site}/forum/admincp/index.php?do=nav
IP Address : xx.xx.xxx.xx
Username : James
Classname : vB_Database
MySQL Version : 5.0.81-community

Have I done something wrong during the import?