WorldPay Module version 3.0 - Support thread

[explorer1979]

I am full following the Manual to install this module, but still experience callback fail problems.

Here are the log WorldPay give to me


== BoF Testing Shop Log
Transaction ID: 41xxx63xxx (Security Reason Changed to some x)
Cart ID: 8exe7bxxd2xx5a15f862cb6exxxxxxx (Security Reason Changed to some x)
Installation ID: 1xxxxx (Security Reason Changed to some x)

Error reported: Callback to http://www.shop.com/test708/index.ph...e=wp_callback: NOT OK, recevied HTTP status: 302
Server Reference: ukdc2-pz-pay01:callbackFailureEmail-1xxxxx:MerchReq-17-95
== EoF Testing Shop Log



== Callback response data ==
HTTP/1.1 302 Moved Temporarily
Date: Mon, 27 Jul 2015 09:26:03 GMT
Server: Apache/2.4.10 (Unix) OpenSSL/1.0.1e-fips mod_bwlimited/1.4 mod_fcgid/2.3.9
X-Powered-By: PHP/5.4.35
location: http://www.shop.com/
Content-Length: 0
Connection: close
Content-Type: text/html
== Callback response data ==



== BoF Live Shop Log
[2015-07-22 16:41:28.288 (TID:msg1Conn9-211795)] Callback handling failed
[2015-07-22 16:41:28.285 (TID:msg1Conn9-211795)] Callback Failed: Callback to: http://www.shop.com/store/index.php?...e=wp_callback: failed CAUSED BY The maximum limit of 131072 bytes has been exceeded.
[2015-07-22 16:41:01.469 (TID:msg1Conn9-211795)] Callback suspended, but retrying (attempt 145)
== EoF Live Shop Log


Where my shop URL is like this
Using cPanel Redirect setting / will be from
for example
http://www.shop.com
redirect to
http://www.shop.com/store


And WP Official Back End setting are
Enter the Shopper Redirect URL:
http://www.shop.com/store/index.php?...eckout_success

All other setting such as
Payment Response enabled? - ensure this is ticked.
Enable Recurring Payment Response? - ensure this is ticked.
Enable the Shopper Response? - ensure this is ticked.
Suspension of Payment Response? - ensure this is NOT ticked (it automatically selects if callback fails).
Click 'Payment Response Password - enter your password. (and then again to validate, do not tick use default as it will reset password fields) Make this secure using numbers and letters. You only have to remember it long enough to enter it in your Zen Cart Worldpay module configuration.
MD5 secret for transactions - enter a pass phrase which can be up to 16 characters long and include spaces. (and then again to validate, do not tick use default as it will reset password fields).

I am all following with the WorldPay 3.0 doc step still out of luck, any suggestion how to check/debug what is wrong on the
HTTP 302 Error and
failed CAUSED BY The maximum limit of 131072 bytes has been exceeded.

Both callback failed if take care of WorldPay log, URL, it include the zendid like this
index.php?zenid=0440xxxeafxx5a710294xx9bea14fxxx

Do it is the problems source?

Thank you.