Thanks Ray, That's getting closer. Clicking on the venue name in the table now takes me to the update page with all the values filled in. However when I make a change anc click on update I get:
incorrect DOUBLE value:
Notice: Undefined index: venue_id in C:\xampp\htdocs\songwriters\venue_update.php on line 252
<input type="hidden" name="WADAUpdateRecordID" id="WADAUpdateRecordID" value="<?php echo((isset($_GET["invalid"])?ValidatedField("venue_update","WADAUpdateRecordID"):$_GET["venue_id"])); ?>" />
Just for fun I tried to change GET["venue_id"]) to GET["id"]) as in above and it changed the id to 0 but dod not make the other changes, specifically uploading an image.