Why is Fluther not working with Mozilla on my PC?

I have a Dell at work and usually use Mozilla Firefox as my browser of choice. Recently (like in the past several days) every time I go to Fluther, I get a MOD_Python Error, and there’s a whole bunch of text on the screen. Fluther works fine with IE, and it works fine with Firefox on my Mac at home, so what the heck is going on?