Hi.
I have the same problem, checkout in 1 page on the same version
if i login before order any product, everything works, find.
But if i add a PRODUT TO CART AND LOGIN after, i have the same error.
if a reload a page, then work´s find again, but the client didn´t know that.
what is the solution?
put code to reload atfer login or a button to reload. i tried but didn´t wor k in any ways.
I don´t know how to do this.
It´s only ideas. i´m not a programmer. Sorry for my english