Plugin with references not working on CRM 2011

Question

I have created a plugin and used a reference to another project (DLL) I have created. The problem is when I try to run the plugin, I get a CRM error saying:

Answer 1

You have to deploy the referenced assembly either to the GAC or merge it with your one (with ILMerge)

See also http://msdn.microsoft.com/en-us/library/gg309620.aspx and Creating a single CRM plugin DLL to store in the CRM database