Render Image

Render Image

I know that there are several threads on this issue, but I have read everything that I could find and can't get it to work. When I go to the View for the form the pictures will not display, and instead give a broken link icon. 

I have a file upload field names Image_Upload and a formula field named Student Picture.

The expression I have is as follows:

((("<img width='64' src='http://creatorexport.zoho.com/DownloadFile.do?filepath=/" + Image_Upload + "&sharedBy=" + zoho.adminuser) + "&appLinkName=") + zoho.appname) + "&viewlinkname=Image_Upload_View'/>"

Any help is appreciated.