It sounds like it could be a permissions issue. The 2nd half of the following article explains how to fix it:
Are your uploading your files to your own web server or to something else like Sharepoint?
You're also welcome to reach out to us at support here if you'd like to send us your output to troubleshoot:
I replied via email, but for anyone else who might have a similar issue, you might check your Console in Chrome to see if there are any errors. Here's how you can access the Console in Chrome:
Failed to load resource: the server responded with a status of 403 (Forbidden).
The configuration seems to be blocking the access to that file and may indicate that it doesn't have "read" permissions.