I've read three former messages in this forum with the same problem, but no solution at all, or a solution that doesn't work on my computer. Is it really impossible to solve this problem ?
When updating the antivirus/antispyware-definitions in ZoneAlarm Security Suite 7.0.483.000 the antivirus-update is finished successfully, but the anti-spyware-update reports "Installation of update package failed: 'update_TrialScreens 1.0' ".Several times I've uninstalled ZoneAlarmSS (zauninst.exe /clean /rmlicense), but after reinstallation I got the same result: "Installation ... failed".Several times
in safe modus I've removed the folder C:\windows\system32\Zonealarm\Updates (as advised in Knowledge Base article 11433). Results: the same error-message when updating. Or once the error "Installation of update package failed: '0-UpdatingDll-' ".
What's wrong on my computer ?

Operating System:Windows XP Pro
Software Version:7.0
Product Name:ZoneAlarm Internet Security Suite