The download did not finish and the install failed. My update history lists the installer as installed; it wasn't. From now on I will do proprietary software downloads and installs at home. My home computer had no problem with the Flashplugin installer download and install and it's a slower computer. My Internet service is a lot faster than the one at the Coffee Shop and it's steadier, too. Can I get a second shot at the Adobe Flashplugin installer download?
You could try to uninstall it and reinstall, either in Software Center or by command line: