case 1050: // create tables triggers this..
case 1060: // Duplicate column name
case 1061: // Duplicate key name - triggered by add index.. but could hide error. - unlikely though.
+ case 1091: // drop index -- name does not exist.. might hide errors..
case 1054: // Unknown column -- triggered by CHANGE COLUMN - but may hide other errrors..
$continue = 1;