I went mulit-currency with my store last week and I was getting a weird output in the cart:

Total in payment currency : 0

The total WAS being transferred to PAypal ok, but the display in the cart (for "total in payment currency" only)was always 0.

FYI I fixed this my changing 573 in default_pricelist.php from:

<td style="text-align:right;"><strong><?php echo $this->currencyDisplay->createPriceDiv('totalInPaymentCurrency','', $this->totalInPaymentCurrency,false); ?></strong></td>

To

<td style="text-align:right;"><strong><?php echo $this->totalInPaymentCurrency; ?></strong></td>

Hmm, it is good to know.

I will take a look at it and do further tests.
If this patch works in all cases (with single currency as well) then i will make this modification permanent in the next CleanMart version.

Thanks for updating your own topic and submit the solution.

Regards,
Support