RTF is a global modification that replaces all towns in the game.

I decided to test the new changes in the spell distribution and found a bug or an oversight; call it what you will.
Maybe palm trees suit the Lizardmen, but they don't really fit everyone else :D
I suggest these solutions to the problem:
1) Make the mod a separate file so that people can install it if they want.
2) Replace the palm trees with dead Orcish vegetation (green)