SE Update Service software - won't start

I've tried re-installing this three times now, but when I try and start it
up, all that happens is that the initial "splash screen" runs,
intermittently showing the SE logo and then swarming colours, repeated ad
nauseam. The application never loads. Interestingly, in Task Manager it
shows as a Process, and not as an Application. Have tried the older version
(2.6.11.7) and now the latest version (2.7.12.4) and have enabled it in my
ZoneAlarm settings. Have also checked that Adobe Flash is installed and
Java. I have got this to work on my machine before, so am completely
stumped.

Running Win XP SP2 plus latest updates and patches, with ZoneAlarm Firewall
& AV.