[QBrigid]

Originally posted by JLS:

NEW~Races that you wish not to start your next random game; Place in the [Pictures folder/Race removed from play folder].

It has worked totally fine, you move the Races you do not want to play to the not wanted folder, but you are correct; plus your race there must be at least:
3 Races in a Low AI Player game
7 Races in a medium AI Player game
12 Races in a High AI Player game

Other wise you may have a duplicate AI player, but if you have 13 Races at all times in your Race directory you will never have a Problem since that is what the default high Player Settings are set at (12).

Neutrals always should maintain 6, otherwise you may have a duplacate in a Med possably a High Player game

Thanks Oleg, I will add that 13 minimum Races are needed in your Primary [Pictures/Race Folder]

REFERENCE

Maximum Computer Player High Setting := 12

JLS its ok to move:
Cryslonite
Fazrah
Krill
Piundon
XiChung

This leaves 15 races in the RACES folder.