I'm running Windows 8.1 with IE 11 built in. It's suddenly stopped working - just get an error message, telling me to close it down. Of course, you can't uninstall and reinstall, because it's built in. I've run scannow, which tells me there are corrupted registry files that can't be fixed. Maybe that's the problem? I've disabled IE and have switched to Chrome, but I've got one web-based database that only works on IE. Any suggestions?