Resources not spawning

[Wyte_Majik]

Everytime i create a map in World Builder and tick randomise resources when i actually load up the map in-game i only get iron, uranium, ivory, horses, cows and sugar. There is no other types of resources around the whole map. (This is even after i have the required Techs to see the resources) Also, when i click on Scatter Resources i get an "Unknown Type" error. ANy help?