even though I'm using a valid URL that does have the application name in itNo Application Named
The URL must include the Application name as a parameter.
I think it must be a problem with the configuration somewhere (the only thing that should have changed is the server name) but I can't think what misconfiguration could be causing this or how to get more information from jadehttp about what the problem is.
It's not logging anything in the \appname_jadehttp\logs\ folder or in jommsg, IIS request tracing doesn't tell me anything I don't already know...