Forum database error

[محروم.كوم]

PHP Code:
Database error in vBulletin 4.0.0:

Invalid SQL:

SELECT pm.*, pmtext.*
, icon.title AS icontitle, icon.iconpath
FROM pm AS pm
LEFT JOIN pmtext AS pmtext ON(pmtext.pmtextid = pm.pmtextid)
LEFT JOIN icon AS icon ON(icon.iconid = pmtext.iconid)
WHERE pm.userid=189 AND pm.folderid=0

ORDER BY pmtext.dateline DESC
LIMIT 0, 50;

MySQL Error : Incorrect key file for table '/tmp/#sql_142e_0.MYI'; try to repair it

Error Number : 126

when I repair it it gives me error 28 storage engine error instead of this error __DEFINE_LIKE_SHARE__