I'm battling with video issues on 7.2.0 so I decided to temporarily re-install 6.7.1. I used the same ISO that I used previously and the install runs fine off a USB stick.

When I try to install the Flash plugin from the 'install components' menu I get a bunch of errors at the end of the process and a pop-up to tell me the installation failed. It also breaks something to do with Iceweasel since I am then no longer able to launch the browser either from the 'Start' menu or from the panel. Is there a way to fix this without creating more problems?