XenForo 2.2.14 adds new functionality for adding one-click unsubscribe headers to emails. Unfortunately, the code released in 2.2.14PL2 breaks functionality by removing a core option.
This release of WND fixes the errors by relying on XF 2.2.14 to set the headers for us - which should work in the majority of cases.
Note: if you are not planning to upgrade to XF 2.2.14 yet, I recommend you do not install v5.0.6 of this addon. Installing 5.0.6 with XF 2.2.13 or earlier won't break anything - but the one-click unsubscribe headers won't be added to your digest emails, which is not ideal.
So I currently recommend:
- XF <= 2.2.13, you remain on WND 5.0.5
- XF >= 2.2.14, install WND 5.0.6
