Hi Mark,
Here is a way to access a collectionnode created using devconsole.
For e.g. Let's say you created a CollectionNode called "myCollectionNode" using devconsole, then the way you can access it as a guest is
private var messaging:CollectionNode = new CollectionNode();
messaging.sharedID = "myCollectionNode" ;
messaging.connectSession = session ;
messaging.subscribe() ;
i.e. you need to assign the name to sharedID property and assign a connectSession object to connectSession property. And then when you call subscribe, you get all the data.
Hope this helps.
Thanks
Hironmay Basu