[SOLVED]paypal payment error in beta 3

[L. Brett Sinclair]

Hello
I have a "payment error" when processing a payment via paypal in Beta 3.

My setup:
Currencies restrictions= Shop default currency
Default shop currency = Euro
currency used: Dollar, Euro,Pound
Payment currency: $ (dollar ).

The process goes fine thru Paypal, except for that message.(this was not a "sandbox" mode.)
What Am I missing ?

Thank you.

EDIT: unlike what the BO tells you, you need to enable Payment Data Transfer. (ON)