paypal failing

While trying to test my live cart I make it into paypal but when I click through all the options in the paypal cart, set billing address and billing method, I then try to finalise the order and it always returns to my checkout_failure.php page.

website can be seen and tested at http://thehighroadcyclingcompany.ch

please let me know if you need anything else.

Try adding this to your failure page:

<?php

@session_start();

var_dump($_SESSION);

?>

That will display more information about the failure including the exact error message which should shed some light on what is causing it.

If you need help diagnosing the result let me know and I can take a look.

Thanks,
The error is

Failure8520a248875ecTransaction refused because of an invalid argument. See additional error messages for details.The transaction currency specified must be the same as previously specified.10444Error63.016619266" }

I set the currency for my cart to CHF in the lines

$WA_PP_ECO_Set_params[1][$nextIndex] = "CHF";

within the confirm.php and

// eCart Language Pack [En]
$bikecart = new bikecart_Definition("bikecart", 0, "CHF", "", true, 2, 2, "kg", true, 2, 1, 0, array(array("ID","N"), array("Name","T"), array("Description","T"), array("Thumbnail","T"), array("Weight","W"), array("Quantity","N"), array("Price","C"), array("Category",""), array("Stock","")));

within bikecart_PHP.php

Is there somewhere else I also need to update the currency?

Actually,
I just updated the line

$WA_PP_ECO_Do_optional[1][$nextIndex] = "CHF";

in the pp_confirm.php file as well and now it all works.

Thanks for your time on this.
A suggestion is that more native currency support could be helpful but thanks for the great product.