when you uninstall Zone alarm there might be some file left that create the problem. so , you can use Revouninstaller to uninstall the zone alarm from computer and as well as registry .
after uninstallstion finished, youtry to install again latest version of that.
I've tried to update the free version of ZA. It keeps popping up the "truevector error" and even shutting it down doesn't allow a finished install. It gets to 98% and just sits there. The HD shows activity but for not. I tried various times to re-install but with the same result. So what's going on here. ZA support isn't helpful or I lost on me with whatever fixes, I tried. Anyone get around this? I've already moved on to another firewall. I just want to know as other users seem to experience this on Vista systems. XP systems do OK or are recoverable and continue on. TIA -----Willy