Can't open Prezi Desktop for trial period

I’ve installed Adobe AIR 3.1 and Prezi Desktop 3.077 on my computer. When I tried to run it, it asked me for username and password and shows the button “activate”. Of corse I push it. It seems to connect to Prezi’s site but nothing happens. The window is completely empty. It doesn’t appear anything. If I close the window and run the Prezi Desktop again, it ask me for username and password like the very first time.

Can somebody tell me how can I run Prezi Desktop? or what I’m doing wrong?

Thanks in advance.


Maybe try using a different browser to upgrade with. If this does not work take a look at this…… for more insight into the problem.