We're aware that some viewers are having issues trying to watch some of our US programmes via our 4oD service on Channel4.com. We are working to rectify this, but in the meantime, here are a couple of tricks which may help in the short-term.
Uninstall Flash using the instructions from Adobe here.
For Windows users - THIS LINK
For Mac users - THIS LINK
After that, re install Flash using THIS LINK