hi,when some use paypal express checkout for payment method in my website,then got an error like this:
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.
but someone can success,my version is 1.3.7.1,and below is the part of the log
DoExpressCheckoutPayment, Elapsed: 357ms -- Failure

TIMESTAMP=2013%2d01%2d16T14%3a39%3a03Z&CORRELATIONID=a9891b23560ce&ACK=Failure&V ERSION=3%2e2&BUILD=4181146&L_ERRORCODE0=10413&L_SHORTMESSAGE0=Transaction%20refu sed%20because%20of%20an%20invalid%20argument%2e%20See%20additional%20error%20mes sages%20for%20details%2e&L_LONGMESSAGE0=The%20totals%20of%20the%20cart%20item%20 amounts%20do%20not%20match%20order%20amounts%2e&L_SEVERITYCODE0=Error&CURL_ERROR S=

have someone the same issue and fixed it,thanks a lot