database error please help

[VBUsers]

i get this when someone trys to empty theyre PM folder why?

Invalid SQL:

SELECT pmid, pmtextid
FROM smora_pm AS pm
LEFT JOIN smora_pmtext AS pmtext USING (pmtextid)
WHERE folderid = 0
AND userid = 2989
AND dateline < 1132581876;

MySQL Error : Column: 'pmtextid' in field list is ambiguous
Error Number : 1052
Date : Monday, November 21st 2005 @ 08:04:54 AM
Script : http://www.lowandloud.com/private.php
Referrer : http://www.lowandloud.com/private.ph...der&folderid=0
IP Address : 00000000
Username : user