Sorts out a problem with the description field and adding users.

app/controllers/user_controller.rb

@@ -14,7 +14,8 @@ class UserController < ApplicationController
     @user = User.new(params[:user])
 
     @user.data_public = true
-      
+    @user.description = "" if @user.description.nil?
+
     if @user.save
       token = @user.tokens.create
       flash[:notice] = "User was successfully created. Check your email for a confirmation note, and you\'ll be mapping in no time :-)<br>Please note that you won't be able to login until you've received and confirmed your email address."