datagridcombobox issues

[scheidel21]

I am using a custom control for a datagridcombobox in a .NET 2.0 application, the project was upgraded from .NET 1.1, and I wanted to continue to use the datagrids instead of dataview grids, so I located a custom control from codeproject.com I implemented it and for the most part it worked, the only issue was selecting something from a combobox for a new record in the datagrid prior to actually having the new record created by adding other fields in first. While I would like this rectified this falls to a much lower priority than why after I changes some code for loading the main forms combobox, did only this one datagrid combobox out of several datagrids and comboboxes fail to load the appropriate data? Here is the code for the form
View attachment form.txt
The whole application can be found for download if you want to look at it deeper, or if you want to criticize it at http://www.scheidel21.net/proj.html

Thank you all for your help in advance