An email from another forum, about this issue
hey guys,
I had the same problem but fixed it.
in the newest version of chrome the way the code is written is
different than what it used to be.
If you want to make your own apps just copy the code in the example
apps and change the images and edit the manifest file to a new link.
if you want old apps to work all you do is edit the manifest file in
that app to the new format and it will work perfectly. I edited apps
such as spark chess and they work. I don't think I can upload them
because they are not my apps to begin with. The process of editing the
manifest file is very easy.
Let me know if you need further help,
Gary :D
Greetings
Dinsan
http://chromestory.com/