CDD > code submission

There was a typo in the CDD plugin code that was throwing me off. When eval code caught an exception, the error message referred to the plugin as CCD rather the CDD. It also didn't provide much in the error message to know which element was generating the error. I made the fix to the type and added some better error messaging to the exception handler in the attached update of cascadingdropdown.php

 

Re-submitting this for consideration to add to standard plugin code.