I started a game with the Yor. I saved and every time I try to load the savegame, the game crashes to the desktop. Other major races and custom races savegames are fine though. Could be related to the Yor or just a coincidence. Anyways, I thought you might be interested in the savegame:
http://wikisend.com/download/316528/Yor1.GC3Sav
Windows 7 64bit, 8GB RAM, SSD, GTX770, i7 4790