Player button missing from Presenter '09
I inadvertently upgraded to Studio '13, but am not ready to purchase. So I uninstalled, and reinstalled the last update of Studio '09. I did the reinstall of '09 as directed, as an administrator,and have rebooted.
The Player button is gone from the ribbon, and I need it.
Additional problem: my existing Presenter '09 presentations will not open. Although I did not touch them while Studio '13 was installed, I now get the message for each one that it "cannot be read because it was created by a newer version of Articulate Presenter".
Do I need to be as drastic as to uninstall and reinstall PowerPoint '10?