I am not sure why but after the acknowledgment from the bank, the program never calls automatic_response.php to finish the transaction with wp e-commerce.
To get it to work, I had to do the following:
1- In Extensions (plugins)-WPCB-ATOS- Normal return='HHTP:/xxx/automatic-response.php
2- In Extensions (plugins)-WPCB-ATOS- cancel return='HHTP:/xxx/automatic-response.php
3- In Extensions (plugins)-Extensions Installees(Installed Plugins) - WPCB - wpcb/automatic-response.php
3-1 line 168 replace $response-code=00 with $response['responsecode']='00
3-2 line 198 add after the last } wp-redirect(WP_SITEURL);exit;
I don't like what I did because it is a hack and not a legitimate improvement, but I need to get my project running before a legitimate solution is available.