I'm assuming it's the insert page that is having the trouble?
to troubleshoot:
add the following code at line 1:
<?php
error_reporting(E_ALL);
ini_set('display_errors','on');
?>
remove the redirect from the isert behavior by changing:
$WA_redirectURL = "blog_Detail.php";
to:
$WA_redirectURL = "";
then in the body, add the following code to write the file upload debug info and the insert SQL:
<?php if (isset($_POST["Insert_x"])) { ?>
<?php echo($WA_Sql); ?>
<?php echo WA_DFP_AllUploadsDebug(); ?>
<?php } ?>
post back the result after trying the insert again.