Can't download Prezi's to work on offline on desktop:

Edit Subject

Dear Prezi,

I just upgraded to the Prezi Edu.Pro version two days ago. I'm trying to download an existing prezi project to edit offline. However, when I select the "download desktop prezi" it opens a new tab like its going to download and then the tab closes. When I click on the file that it downloaded at the bottom of the browser it is a tiny file that won't open.

Please help!