Shipping costs problem: user pays shipping costs, order detail shows zero shipping costs

[jonotespere]

Hi,

I'm running version 1.7.4.2 and i'm using AngarThemes P17AT15 theme.

I'm having this issue: in some orders the user correctly pays goods + shipping costs (eg: 59,90 € + 5,90 €) but in the order detail and in the orders list (Prestashop admin) it shows zero shipping costs, so the grand total is calculated by Prestashop in 59,90 € (although the user already paid for 65,80 €, via PayPal, PayPlug or other payment methods).

It doesn't happen all the time. Most of the time, in the order detail and orders list, total is correctly displayed, but sometimes the system just loses track of shipping costs...

Can someone help me figure out this one?

Thanks!