RE: [coldbox:9769] Re: The value returned from the createAppLoader function is not of type coldbox.system.web.loader.AbstractApplicationLoader.

That might make the error go away, but it won’t tell us why it was erroring. If you just upgraded ColdBox, I think CF might be caching something even though you reinitted. I’d be very interested in knowing if the error persisted after a restart of the CF services.