Checkout_Success blank page

Hey everyone,
I've getting the same problem, only mine is on the checkout_success page. I've replaced the tpl_checkout_success_default.php in the /includes/templates/template_default/templates directory, and have also uploaded it into my custom template directory at /includes/templates/getskinsnow/templates

I've also uploaded a fresh new copy of the /includes/languages/english/html_includes/define_checkout_success.php file.

nothing seems to resolve this.

ALSO, I've changed to the Classic Green template, and other "stock templates" that come w/ the default install, and the problems occurs there as well - so perhaps, is this issue on the Checkout Confirmation page? I can't see how, since if it were a custom template issue, it wouldn't be happening on the classic template too.

I've installed the debug utility, and nothing is being written into /cache/ and yes, my permissions are correct.

hope someone can shed some light on this ASAP.
Fred

What happens if you isolate things down to an addon or configuration issue by installing a fresh copy of Zen Cart in another folder+database and doing a test checkout using check/money order? Install the demo products and use one of them for the testing.

Then install and enable your current payment module, and test checkout again.

Then your shipping module, and test checkout again.

Then your template, and test checkout again.

Then any other addons, and test checkout again.

Then copy your current database to this new test area's database, and test checkout again.