I'm using TurboTax Premier for desktop. Turning off pop-up blockers did not work. Billing and mailing addresses are the same (shouldn't matter anyway since I haven't gotten to the point of being able to enter my credit card data anyway!). Seems to me this "snag" is a little bit more than "slight"!!! Unbelievable that Intuit doesn't jump all over this problem that is preventing ME from paying THEM.
