I get the above message when I try to run an update. That's all it says. Is there an error log somewhere that might give me more useful information?

I'm running Zone Alarm on three nearly identical XP Pro machines, only one of them has the problem. This is a desktop machine that's been running ZA for many years:

ZoneAlarm with Anti-virus version: 10.0.250.000
vsmon version: 10.0.250.000
Driver version: 10.0.250.000
Anti-virus engine version: 8.1.8.79
Anti-virus signature DAT file version: 1060667040
ZoneAlarm Browser Security: 1.5.322.0
ZoneAlarm ForceField Spyware Scanner: 1.5.53.235
ZoneAlarm ForceField Anti-Phishing Database: 1.2.104.0
ZoneAlarm ForceField Spyware Sites Database: 04.155

Thanks for your help!