We discovered that this error occurs when there is a problem with any Connection in an App. For example, if I have 4 Connections in my Operations App, but one of them has a Connection error, I won't be able to edit any report templates in the Operations App until the error is resolved. (See example below)
Name App Connection Status Cache Status Last Cache Update Sales Connection Operations App OK Generated 10/28/2016 9:17:00 AM Cust Svc Connection Operations App OK Generated 10/28/2016 9:19:00 AM Info Tech Connection Operations App No engines are working
Request has been
purged due to
- HR Connection Operations App OK Generated 10/28/2016 9:19:00 AM
Until the error is resolved for the Info Tech Connection, I won't be able to edit any report templates in the Operations App.
If you're getting the same error ("You must generate the cache for the app ... before editing the report template"), there is probably a problem with one or more of the Connections in your NPrinting App. Here's a link to the NPrinting Help site, which describes how to correctly set up Connections: Creating connections ‒ Qlik NPrinting
I'm also including 2 screen shots of our Connections in NPrinting, for your reference. We are connecting to QlikView documents, so if you are using QlikSense, your Connections will be set up differently.
2. A Sample Connection
I hope this is helpful! I'm loving NPrinting, now that I've learned how to use it.