Brad, this is ColdFusion 9.01 and CB 3.5
While debugging this I have noticed that the line it complains on, it checks to see if the data is an object. All the objects show the variable extends with the full path, yet the renderer, has the extends variable as plugin.
And yes this is a ColdFusion error, yet despite this the application runs fine.
So I take it nobody can explain this then?