Hey guys,

I am experiencing error #10413 also. I have products with "Special" prices that are on "Sale" at an additional 5% off of the special price. As products are ran through Website Payments Pro there are no problems, but when customers try to use Paypal Express, the error pops up and cycles them back to Step 2 in the checkout process.

My products all have no taxes established & free shipping.

Any ideas?