So when you go into the NDui config then click auras and then click the cogwheel for bringing up the aura watch config and then move one of the aura watch frames you will receive this error. This was tested with just NDui and Bauderror addon. Nothing else enabled and even made sure of clean WTF to be sure there was no conflict.

`AddOns\NDui\Core\Mover.lua:116: attempt to index upvalue 'f' (a nil value)
Count: 4

Call Stack:
[string "=[C]"]: ?
[string "@AddOns\NDui\Core\Mover.lua"]:116: in function UpdateTrimFrame' [string "@AddOns\NDui\Core\Mover.lua"]:166: in function <AddOns\NDui\Core\Mover.lua:164>

This seems to have resolved the issue. I will close this as I tested with a clean and imported profile and no issue arose, thank you @siweia