For some reason when I'm testing the CashU payment method and i complete the sign up form and click continue, I get to the CashU payment form but I get an error message saying "Invalid Character Found." I have no idea why it says that since I have the encryption code and everything else entered correctly. If anyone has any ideas please let me know.
Try to check your products and make sure there is no special chars in product title. If this will not help. Please submit ticket and provide aMember CP info in it.