New Guy here, hope this is correct.
I have a Sony Vaio VPCSA, Win7 Pro, 64bit. Running Norton Internet Security 2014. Installed NIS 2014 and it worked great for about 2 months and now it will launch and stay on screen for about 3 seconds and then close.No other AV products running except for Hitman Pro Alert (Browser). I can launch all the Norton apps (live update, scan, support) just fine with the taskbar right click and run.
I have so far uninstalled the product thru the control panel, then reboot. Ran the removal tool and reboot, and then did it one more time. Still did not work. I tried the Remove and reinstall tool from your site and it still does not work. The Tool bar works and so does the vault.
Any help would be great.