Ok if you have an intel mac (Macbook, Macbook Pro, Mac Pro, Newer iMac's and newer Mac Mini's) then to use shockwave you need to run Safari in Rosetta because shockwave won't work otherwise. To do this Command + Click on safari in the dock (or find it in the finder) this will open a window in finder where it is located and should even highlight it for you. Now Command + I (Right click + Get Info) then select the Rosetta emulation mode which should be a tick box near or next to the locked tick box.