Okay, downloaded the trial. Current AV user. I tried to do the install after removing NOD32 and restarting. The install seems to work well, then I get the unsigned driver popup. Click to continue, and immediately ESS rolls back everything and uninstalls. Tried several times; same thing. As soon as I click the continue popup, the installation rolls back. The only message I get is that the installation could not be completed. I even re-downloaded in case the installer was corrupted. All other security software disabled. OA completely removed; rebooted twice. Cleaned remnants from registry. Any thoughts?