there was a probelm with the spry validation for the radio button.
i commecnted this line:
/*var Customer_Type__1_Spry = new Spry.Widget.ValidationRadio("Customer_Type__1_Spry", { emptyValue:'new' , validateOn:["click"]});*/
to get the form submit working.
To be honest, I'm not sure what the Spry issue is, Adobe have discontinued support for spry. We will be moving away from it as well in the future and will be moving to jquery validation in the next version of eCart. The radio buttons will still be validated by server validation with the spry validation commented.
