Error message help

[twinstead]

Verison 1.3.7.1

Can anybody give me some clues about what to look for when customers receive these errors when purchasing that appear to be coming from

/home/supershop/public_html/includes/modules/order_total/ot_tax.php (The file ot_tax.php has not been modified in any way from the stock installation):


reset() [function.reset]: Passed variable is not an array or object in
/home/supershop/public_html/includes/modules/order_total/ot_tax.php on
line 38

Warning: Variable passed to each() is not an array or object in
/home/supershop/public_html/includes/modules/order_total/ot_tax.php on
line 39

Warning: Cannot modify header information - headers already sent by
(output started at
/home/supershop/public_html/includes/modules/order_total/ot_tax.php:38) in
/home/supershop/public_html/includes/functions/functions_general.php on
line 44

[stevesh]

Are you using Paypal?

http://www.zen-cart.com/forum/showthread.php?t=56216