Thanks for coming in here to let us know of this. Please find attached the fixed DugisGuideViewer.lua. I have also submitted my fix to Dugi
That’s responsible of Tukz because Dugi Guides does not behave like any other addon, Dugi Guides takes control of the Objective Tracker, as you can see in the screenshot, meaning if anything else like Tukui or ElvUI tries to take control of it, it can cause a lot of lua errors. As you may have already experienced.