error on forum...never seen this one. help
 

Database error in vBulletin 3.8.1:
Invalid SQL:
SELECT imageid, images.title, images.description, filename, thumbname, originalname, extension, images.catid ,images.userid, images.username, images.title, images.views, votenum, votetotal
FROM ppgal_images AS images

WHERE valid = 1


ORDER BY RAND()
LIMIT 4;
MySQL Error : Can't create/write to file '/tmp/#sql_45d8_0.MYI' (Errcode: 28)
Error Number : 1
Request Date : Sunday, May 31st 2009 @ 12:20:21 AM
Error Date : Sunday, May 31st 2009 @ 12:20:21 AM
Script : http://www.SITE.com/forums/index.php
Referrer : http://www.SITE.com/forums/admincp/index.php?do=head
IP Address : IP
Username : GoTTi
Classname : vB_Database
MySQL Version : 5.0.67-community-log