Localhost: Image from origin 'null' has been blocked from loading by Cross-Origin Resource Sharing policy

Question

I'm opening the page on two computers, both ip and localhost tried:

Strangely, for one computer, the http://192.168.1.100/dev didn't work and http://localhost/dev did. For the other, neither worked. It says,

Image from origin 'null' has been blocked from loading by Cross-Origin Resource Sharing policy: Received an invalid response. Origin 'http://localhost' is therefore not allowed access.

None of the answers I found seem to work. And I don't understand why it only worked on localhost on one computer. Any suggestions?

Edit:

1. Browser: Chrome Version 34.0.1847.11 beta
2. http://127.0.0.1/dev didn't work either
3. The uploaded version on server didn't work either

Answer 1

It turns out, it was the AdBlock plugin that blocked the file.

The name of the directory containing the blocked file was AD16. Somehow the other AD01, AD09, AD22, AD27 worked fine, but not AD16.

Disabling AdBlock and everything works fine.

The same problem would have occurred on any chrome with the plugin on, so we changed the name of the directory to AD_16.