im trying to add a new record to my database but i am getting some weird error in the VB Dll's from this line of code

Code:
        OleDbDataDentist.Update(DentistDataSet1, "Dentist")
the full frame's code is in the file attached.


If anyone can take a look at it and tell me where im going wrong it would be great.

Thanks in advance
Ross Clelland