I installed Inventor Professional 2013 on my mac through VMware where it runs on Windows 7. When I try to open a tutorial video (for making the green vase object) it shows me the "install flashplayer" message and does not play the video. I now installed flashplayer 11 about 8 times and restarted windows etc...and the message persists. On a regular Win7 laptop the same procedure works fine. Flasplayer seems to work from the Adobe point of view. After installation it says everything is o.k.