My Yor became Festron - How did this happen?

A Festron pop infected your Yor.

One of the reasons there needs to be options to eliminate races and other things like Monsters in the setup.

The total elimination of the appearance of a race or such in the options would be an easy fix for this known bug.  

Gypsy2299 - That is a good idea.  However, this still needs to be fixed in the program.  Obviously all synthetic races are immune to the Festron.  Probably the other exotic races like silicon and ammonia should also be immune.

When I was playing as the Yor and met the Festron, they told me that I was useless to them as a host for their eggs.  I have a screenshot somewhere somewhere showing this.

Despite this, my citizens had their descriptions changed to Festron over a number of turns, but their pictures remained Yor.  It definitely isn't working right.

Thank you.