Custom Field, The given assembly name or codebase was invalid
Posted: 01/12/2009 Filed under: Development | Tags: Custom Field Leave a comment »This is often the case where our control(s) have not been created appropriately. Have a look at the CreateChildControls() override method.
Remove or comment out the base.CreateChildControls() line from the method.
Rebuild and replace the assembly back into the Global Assembly Cache (GAC), and the field would work as it should with no exceptions.