Adjust ControlView so that it properly decoded entity_names.
Adjust ControlView so that it properly decoded entity_names.

Also make error message more verbose so we know when ControlView
is the thing responsible for making us not able to get at some stuff.

I spent far too long sussing this one through while tryign to get
remotebag stuff working.

TiddlySpace/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,FND/tiddlyspace