HI,

I've installed PayPal, and when trying to complete a payment I get the follwoing error:
10413 Transaction refused because of an invalid argument. See additional error messages for details. - The totals of the cart item amounts do not match order amounts.

What I've tested so far + results:
CURL test:
Data validation
Good
Also with ?ssl=1 added.

IPN test:
Illegal Access

I turned off tax and shipping settings in my PayPal account.

http://my_site.com/store/ipn_main_handler.php returns:
Nothing to process. Please return to home page.

I have re-installed PayPal via my admin.

Sandbox transaction does work...

Any ideas what could be causing this?

Thanks in advance!
Regards,
Jurjen