Error registering plugins and/or workflows. Plug-in assembly does not contain the required types or assembly content cannot be updated

Question

I implemented one custom workflow in in Visual Studio 2010 using CRM 2011 Developer Toolkit. It was working fine with system generated namespace. But, when I changed the nam

Answer 1

Make sure that your plugin/workflow class is a public class.

I got the same error because my plugin class was private.