Here is the public URL of your pic I DL'd and put in my Public folder https://dl.dropboxusercontent.com/u/3595745/QXvUnUwqiXKep8ke3ZS1Hc_T9uxAM1cBowCKXB_VZcE.jpg
Ok. Checked things and as i said earlier Dropbox is not the problem. My settings were fine which was evident since the Dropbox link worked elsewhere. See how the image is showing up now? I used the link from your uploaded version to display it, but there's a catch: for whatever reason, your version of the file is smaller - only 77kB, whereas the original (the one i'm trying to post) is 151kB. I'm trying to tell you i cannot upload/attach/link to anything over 100kB, using my hard drive, dropbox or any other site anywhere at all.