I have a PS 1.4.0.17 and today I noticed same problems when customer tried to pay via MB, but in difference that I did not get the money to MB account, the PS BO shows "Payment error" and "Warning: 0,00 € paid instead of 120,00 € !". Then I went to MB site and I can only see a "Per Transaction Fee" (-0,21 EUR), but no money came in ... Any help please, I can loose a customer/order because of this ... Thank you! EDIT: I forgot to mention: I already received several orders using MS as payment option and had no problems ...