need a bug fixed in a vb.net winforms project

I have a program that is really simple. another programmer on here wrote but it never worked. It works when running from source code but when compiling, and installing, it breaks. I need the bug fixed. I have attached all of the source code. what it was supposed to do is install MS SQL express when it installs and create a database called medical. If SQL express is already installed, it will create that database just fine. the problem comes when creating new records and saving. I attached all the source code, compile it, and create an installer and run it, go to a window and click new to create a new record, add some data, and then click save. When running in the IDE, it works, but after compile and install, I get an error anytime I click save. it is VB.NET and MS SQL express 2005 error upon clicking any save button is: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** [login to view URL]: Operator '=' is not defined for type 'DataRowView' and 'Nothing'. at RAC_MedicalClinicVB.frmPayer.btnSave_Click(Object sender, EventArgs e) at [login to view URL](EventArgs e) at [login to view URL](MouseEventArgs mevent) at [login to view URL](Message& m, MouseButtons button, Int32 clicks) at [login to view URL](Message& m) at [login to view URL](Message& m) at [login to view URL](Message& m) at [login to view URL](Message& m) at [login to view URL](IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)