This one was done for a different purpose a long time ago, but it's the same application so it will work for restoring original fonts in this case too.
Uhm, so I downloaded the file, unzip it, then found out the DroidSansFallback can't be opened. It says "The requested file fontlocation/DroidSansFallback.ttf is not a valid font file".
I can open the other files. I'm on Windows 7, btw.
Corrupt download?