I see that others are asking the same question. Why is Flash Player 17 hanging up? Is there something wrong? Can someone at Adobe maybe just admit that and that they are trying to fix! Please! Something!!
This morning we resolved a problem that prevented Flash Player installations from completing for some of our Macintosh users.
If you encountered this problem, please delete any previously downloaded Flash Player installer and either:
1.) Download the installer again from https://get.adobe.com/flashplayer
2.) Download the stand-alone installer from http://fpdownload.macromedia.com/pub/flashplayer/latest/help/install_flash_player_osx.dmg