Can't post my Demo

I clicked on this link:

selected “download”
once downloaded i clicked “show in folder” and got it in my download folder renamed to “compiler”
i click on that and it brings me to this which is clicked “compile” and click on “here”

then i click “open with firefox”
and a working copy of my game appears. My computer also downloads the file into my temporary folder. i move the file into my dropbox. I right click and select “copy dropbox link”
here it is: Dropbox - Error - Simplify your life
change it like you said: IT WORKS!

Tell me what i did wrong or if it works for you!