where is the zip file ?
if it is in your own HOME folder then there should be no problem
if some other place like on a networked shared drive there might be a permission issue
When I try to attach a file to my Blackboard sit for class
i seam to remember reading that " Blackboard " was using Microsoft Silverlight" for the DRM that was required
after some googling
Linux might not be a supported client for the Blackboard software
you need the Oracle java and not the default installed OpedJDK