I switched on my laptop and ESS did not fully install. The ESS welcome screen froze and no other apps loaded, so I tried to uninstall ESS with the intention of investigating the problem and then reinstalling. However, the uninstall did not complete, and now I'm in the situation where I can't uninstall because the programme belives itself to be already uninstalled, but neither can I reinstall because it thinks also that it is still installed. I should add that I've been running the programme successfully for several months without hint of a problem. I'm at an impasse. Can anyone tell me how to complete the uninstall, so that I can start again from 'square one'. Thanks in advance to anyone interested.