I couldn't get my server to start with the sample KFGameType written over my old one.
With my regular KFGameType, I was able to summon a couple WTF monsters, & serverperks showed up, so I knew at least everything was installed correctly.
I changed it to Custom game length & 15 waves, and then replaced only the Waves, MonsterSquad, and MonsterClasses values from the sample, and it's running now.
When I have time I will go through the sample KFGameType and my own line by line. If I narrow down what caused my problem I will edit this post again.
Thanks for keeping this mod's download link alive, I've missed this craziness.