Shockwave and Flash are considered to be high security risks and many browser now have them turned off by default.  You will get a message either saying Flash is not installed or is out of date.  Before updating flash look at chrome://plugins by putting that in the address bar and see if you need to check the box to enable flash to run on a web site.

Flash is a high-security risk and we wish it would be removed from websites

For reasons why and for help to disable Flash select the link below.

Time to get rid of Flash

Is it time to get rid of Flash?