"The class is not configured to run in the same security ID as the caller."
Why on earth does this keep coming up? Grok, your plugin interface is causing it, and goodness knows I had a hell of a time with the same problem when working on the AIM control.
You can search for that in the MS KB. I recall it being something about windows wanting to run a control under a certain account but since the control is instantiated in your VB debugger, it can't start an instance under the account it wants. It might work better if you compile your project and debug it using windbg.
I don't know. But you can have the source code and compile the control yourself.