Can't Access Formbuilder

I created a form and set the Name, Predefined Value, CssClass, and change the control's developer name for a couple textboxes. Once I published the form I got the following error: "There is a column in the table that cannot be resolved because it has no name specified and is not mapped."
Now everytime I go to the form builder it gives the same error, the error page is attached as an image. The forms widget is also no longer working. 

Hi Todd,

We've replied to your ticket: 456326.

Regards,
Pavel
the Telerik team