That is very strange. I'm guessing the problem is a permission's issue of some sort, since the folder locations are the same....
There are a couple of things you could try:
1) Its possible there is a permissions issue on the folders themselves. Try doing steps 3 and 4 on the folders that contain these files, rather than the files themselves.
2) Alternatively, you could test for permissions issues by running AUI.bat in administrator mode. If you right click on the desktop icon and select "Run as administrator", does the interface switcher work?
3) If (2) doesn't work, we may be able to learn more about the problem by entering some of the commands from the switcher into the command line.
1. Start the windows command prompt ("Command Prompt" or "cmd.exe" on the start menu).
2. Go to the folder with Hyrule total war (copy the following command into the prompt and hit Enter):
Code:
cd "C:\Program Files (x86)\Sega\Medieval II Total War\mods\Hyrule\"
(quotes and everything. You can paste into the prompt using the right-click menu (Cntrl-v doesn't work))
3. Now run (copy and paste into the prompt) one of the following blocks of code to switch the active UI:
To switch to Zora Domain:
Code:
copy /Y .\AUI\zora\s*.* .\data\ui\northern_european\interface
copy /Y .\AUI\battle_ui .\data\ui\northern_european\interface
copy /Y .\AUI\zora\radar_map_background.tga .\data\world\maps\campaign\imperial_campaign
To switch to Ordona Province:
Code:
copy /Y .\AUI\ordona\s*.* .\data\ui\northern_european\interface
copy /Y .\AUI\battle_ui .\data\ui\northern_european\interface
copy /Y .\AUI\ordona\radar_map_background.tga .\data\world\maps\campaign\imperial_campaign
(These are both civilized races, so they are mutually exclusive. Since it keeps the last interface you used, I included two examples just in case the first example happens to be the race you last played as

)
I always get an error message after the battle_ui line ("The system cannot find the file specified"), but the other lines should report what files are being copied (I get 6 files from the first command and one file from the third).
After this enter:
Code:
cd ..\..
start kingdoms.exe @mods\Hyrule\Configuration.cfg
To start the game and check whether the selected UI is installed.