[phunkyfish]

Don't think popups are possible. You can queue messages, however only after the addon is started and they are only displayed for a short time.

I'm using setting dependencies. e.g. B is only available if A is enabled. C is enabled if B is greater than foo. Disabled settings are greyed out.

You can find some examples of dependencies in other PVRs settings.xml. However don't use mine as I've migrated to the new setting format. Do not think any other PVR has done that.

I might look at the new settings format and see what it offers. I really just need to add some descriptive text for one of the features.

Any pointers on how to start using the new settings format?

I don’t see any docs for it.