Problems with attachment uploading after upgrade

[perfphysio]

More information on my error is copied below:

Database error in vBulletin 3.6.1:

Invalid SQL:
INSERT INTO vb_attachment
(dateline, thumbnail_dateline, visible, userid, extension, filename, posthash, filehash, filesize, filedata)
VALUES
(1159540897, 1159540897, 1, 1, 'pdf', 'hemme.pdf', 'f617ae8dbc7e1414a9d56bc0e4f8c8d6', '0224e470428fc96d106fa9060783ade7', 1099652, '%PDF-1.3\r%????\r\n2675 0 obj\r<< \r/Linearized 1 \r/O................................................. ........
...............
...............

MySQL Error : MySQL server has gone away
Error Number : 2006
Date : Friday, September 29th 2006 @ 07:41:38 AM
Script : http://www.physiobob.com/forum/newat...anageattach&p=
Referrer : http://www.physiobob.com/forum/newat...d56bc0e4f8c8d6
IP Address : 86.132.155.235
Username : physiobob
Classname : vb_database