Dolgubon Set Crafter UI error DolgubonSetCrafterWindowLeftCraft_Clicked:3:
 

I've searched the forums, maybe not well enough? But I can't find anything regarding this error:

DolgubonSetCrafterWindowLeftCraft_Clicked:3: function expected instead of nil
stack traceback:
DolgubonSetCrafterWindowLeftCraft_Clicked:3: in function '(main chunk)'
|caaaaaa<Locals> self = ud, button = 1, ctrl = false, alt = false, shift = false, command = false </Locals>|r

Any ideas?

Post addon related error messages into the addons comments (or the author's bug panel if it is acticated) at best.
And write in addition when it happens, what you did where and how to reproduce it.