Hi Andreas,

Quote Originally Posted by frisco_aw View Post
However, when i entered invalid credit card number. i got redirected to a blank page with the following url.

Any idea what i did wrong?
Yes, you are using an ancient version of the software.. the problem you mentioned is caused by Zen Cart 1.3.9 and was fixed in version 2.0.1 of Coen Manual Card.

Please upgrade to the latest version and this problem will stop.

All the best...

Conor
ceon