Problem with Tiles (Cliff)

Hi there. I'm working on a map with extended archive of tiles. I used the WEUnlimeted Enhancer to do so. All nice that I can use more tiles now for my map, because I will need many of them. But recently I tried to make a snowy mountain on my map be using the "Snow (Cliff" - Tile from Lordearon Winter and the result is what you can see at my attachment. I tried to chance the listing order of the tiles but it still doesn't work... any help?

...thing is, if you add new cliff tiles to your map using WEU you apsolutely must not use em as real cliffs... The result of doing so is that nobody will be able to run your map without a special weu patch, and some bugs might occur like the one you have there...
The same thing happened to me, and after a few minutes of experimenting i decided to use my backup version of the map... so if you dont have one, i cant say i have given you any creative adivce :( sry

Oh, I didn't know that. But can I leave the tiles, if I don't use the new ones as cliffs?