You could try temporarily disabling add ons by click the "Tools" menu and choose "Internet Options". Click the "Advanced" tab on the multi-tabbed dialog box that follows. Scroll down underneath "Browsing" until you find the checkbox "Enable third-party browser extensions". Uncheck this box and press "OK" to close the dialog box.
Alternatively your flashplayer may need updating. click here On occasions flashplayer needs fully uninstalling before reinstalling. There is an uninstall program on the Adobe site.