Blank page after order confirmation

[MissV]

We were able to checkout on our shop with no problems until I modified the Payments by check - native module.  I have reinstalled the Payments by check module, but it is still throwing this blank page whenever I confirm an order.  We are running PS 1.5.4. 

 

To recreate the error:

 

1. Place any available product in cart from http://ustglass.com/index.php?id_category=24&controller=category

 

2.  Go to checkout, you will need to register in order to checkout.

 

3.  Click the button to confirm the order.

 

4.  Blank page occurs and no email notification is sent to our notify address:

http://ustglass.com/index.php?fc=module&module=cheque&controller=validation

 

I am concerned that I may have accidentally unhooked a module somewhere?

 

Here is the debug output:

 

Fatal error: Call to undefined method ShopUrl::cacheMainDomainForShop() in /home/ustgl1/public_html/override/classes/Mail.php on line 212
 

Thank you for any help/ideas/suggestions you can give me.

Edited December 12, 2013 by MissV (see edit history)

[El Patron]

it would seem that there is a class override (possibly installed  via module or hand).

 

/override/classes/Mail.php

 

you might look inside this file to determine  where it came from (not part of native)

 

another option is to rename it to _Mail.php and retest

[MissV]

Thank you for the courtesy of your reply.  I tried uninstalling and reinstalling the cheque module via FTP, but it did not fix the problem.  Then, I tried uninstalling and reinstalling the module through the back office / modules, and again tested a checkout, and there was no error when I confirmed the order.  Problem solved.