First common question:
Did you zip your directory (your zip file contains one item, the directory), or the contents of the directory (your zip file contains a source directory, an images directory?, and a file named manifest). If you did the former like I first did and several others from what I have seen, you'll see problems like this.
The latter is the way you want to do it, and your zip file should look something like
And your manifest file should look something like
subtitle=Whatever whatever does
Hopefully this helps get you started...