[CyberRanger]

The solution ended up being so simple ... once I fixed it! When I was making the call to my second database, I was using:

PHP Code:

$db = mysql_connect($db_host,$db_user,$db_password) or die(mysql_error()); 


by changing that to:

PHP Code:

$dbclasses = mysql_connect($db_host,$db_user,$db_password) or die(mysql_error()); 


the error calling

PHP Code:

$vbulletin->db->unlock_tables(); 


went away. :banana: