Reading inc file on web browser

I have a .inc file on a server. I was able to read the file from a remote server but not working now. http://ift.tt/2hqmxaL The above path when opened in the web browser, does not open the file. It seems the browser is not able to read the file. There is another file in the same folder and it works file. The browser is able to read the file http://ift.tt/2hGrA2U