Issue:

Receive this error when clicking the Hotlink Button: NullReferenceException in View.HotLinkDetailsExcelView.ComboBox_SelectionChanged


Cause:

 - The user creates a record and changes the method/derivation to HotLink 


- The user then makes a change to the Excel File, e.g. Moves it, deletes it, renames it. 


- The user then goes back and tried to make a change to the HotLink Record.  


- Click on the HotLink Button on the record  


- Double Click on the Hotlink Attached. 


- The application crashes. 



Solution: Remove and re-add the hotlink.