Have you tried to set a break point and step through the code? In order to help you with this, we would need to see the code that is generating the error and what you were attempting to do when you received it.

Is google broken where you live? :P Asking the same question again will get you the same answers. How to to AppDomains for plugins[^]

A little Google goes a long way[^]... A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007