Vincent Volmer, are you sure you updated the file correctly?
DarkAxi0m, perhaps make a new function called "formatMoneyBank" in Shop-Subs.php? Edit the normal function as mentioned above, and then add something like:
function formatMoneyBank($money)
{
global $modSettings;
// Cast to float
$money = (float) $money;
// Return amount with prefix and suffix added
return $modSettings['shopCurrencyPrefix'] . $money . $modSettings['shopCurrencySuffix'];
}
(this is the original code, except it's a function called formatMoneyBank instead of formatMoney)
Then, go through the code, and whenever you want something to appear with the decimal places, change
formatMoney( to
formatMoneyBank( (probably in Shop-Bank.php and Shop.template.php, among others)
Hope this helps you