I occasionally have this problem. When I do I google for the full version of shockwave.

http://sdc.shockwave.com/shockwave/download/alternates/

You will need to scroll down the page as flash player is first.

You have to make sure that the previous version is uninstalled. Here is the link for troubleshooting shockwave.

http://kb.adobe.com/selfservice/view...3264&sliceId=1

Hope it works soon!