This is a pretty old thread… could you describe the issue you are having with the addon in more detail?
Also – the first thing to try whenever you have any kind of problem with an addon is to first completely exit WoW, then start it up again and disable all other addons before logging in. Then try and see if it works.
If that doesn’t work, your next step should be to completely remove the AMR addon and all of its settings. The Twitch App can help you with this – it has an option to delete settings when you delete an addon. Then re-install the latest. Important: you must completely exit WoW before doing this.
If neither of those work, we can try to troubleshoot further.