I'm getting the following errors relating to Narcissus/SettingsFrame.xml. I have disabled all addons except BugSack and Narcissus as shown in the screenshot. Please let me know if there is anything else I can provide.

• 25x Narcissus/SettingsFrame.xml:599 Frame NarciSettingsFrame: Unknown method OnEvent in element OnEvent
• 25x Narcissus/SettingsFrame.xml:633 Frame Narci_PreferenceButton: Unknown function Narci_PreferenceButton_OnClick in element OnClick
• 50x Narcissus/SettingsFrame.lua:1 Error loading Narcissus/SettingsFrame.lua
• 50x Narcissus/SettingsFrame.xml:531 NarciSettingsFrame: Has bad mixin: NarciSettingsFrameMixin
• 50x Narcissus/SettingsFrame.xml:597 Frame NarciSettingsFrame: Unknown method OnLoad in element OnLoad
• 50x Narcissus/SettingsFrame.xml:598 Frame NarciSettingsFrame: Unknown method OnHide in element OnHide

Narcissus/SettingsFrame.lua was missing so all of the methods mentioned couldn't be found. I re-installed from the WoWup client and all is good