Hello Casey, Many thanks for your advice. I used the Revo uninstaller, and removed the previous Ad-aware programme and also three entries of visual c+++ runtime. Two redistributable and one update. Also all traces of these programmes were removed from the registry. I then rebooted and started the 8.2 setup. The result I regret is "Cannot load runtime etc." So I downloaded this, rebooted and tried again, with exactly the same result. Since the 8.1 version is more than adequate for my needs, I will continue to use this for the time being. Many thanks for your quick response and help.