No your custom UI folder can exist with just windows_pieces_01.tga in it and that can be the entire mod.
or just compass..
or compass and spellbook, etc.
in other words.. when you say
/loadskin myui 1
EQ inventories the first EQGUI.xml it comes across. Essentially its shopping list. EQ will then go shopping in your designated
custom UI folder first.
whatever it doesnt find, it will return to the
Default folder and take everything else it needs from there.
The problem lies in that when you copy
everything (especially the EQGUI)
from the Default folder to your custom UI . When SOE patches and changes some of those files. (or adds them) EQ will 'fill its shopping list' in your
custom UI folder and never go back to the
Default to get what it should, the game doesnt see everything it needs to. Hence you crash.
ps. some mods do designate their own 'shopping lists' but it the author's responsibility to keep it updated. But that's another matter.
(pardon while I tweak my language for this post..
)
Ok there I think I got it the way I want it now
(ok I lied but now I am done editing.. promise.)