manually download and install the appropriate flash player for your browser: http://www.adobe.com/support/flashplayer/downloads.html
if that fails, you'll need to clean and then install: http://forums.adobe.com/thread/928315
What is your operating system & version?
What is your web browser?
What kind of "docs" do you want to display with Flash Player?
WIn 7 sp1
IE v9 64 bit
Sirius radio - listen online - works on goole chrome