All I can say is that I installed Changeit v0.9 a very long time ago, and to this day, it still works. I have just played a match to confirm it.
Maybe your system is somehow corrupted?
---Update---
To make life easier on you, I have archived my ChangeIt v0.9 game drawer in a zip file and uploaded it to The Zone!
So at least you have a verified working game setup.
Hope it works.