Blank screen meaning I have no flashplayer though it supposedly installed.
You can check if the plugin is installed on safari by following these instructions - http://browsers.about.com/od/safar1/ht/safariplugin.htm
Under Shockwave Flash, you should see something like Shockwave Flash 10.3.r183 — from file “Flash Player.plugin”. Do you see it?
Also, please make sure plugins are enabled - http://247support.custhelp.com/app/answers/detail/a_id/8968/~/safari%3A-enable-plug-ins.
Finally, if those solutions don't work, try a clean install.
1. Follow the CLEAN uninstall instructions here. Make sure to delete all the files/folders in step 4. http://forums.adobe.com/message/4041846#4041846
2. Download this zip of the latest Flash Player for your machine. I have one for you here, pulled from our flash player archive page. http://download.macromedia.com/pub/flashplayer/installers/archive/fp_10.3.183.90_archive.z ip
3. Extract, and navigate into the 10_3_r183_90 folder (not debug).
4. Mount flashplayer_10_3r183_90_mac_intel.dmg, and continue with the install.
Hope this helps.