Kathy, I'm sorry if I did it too 'technically'.
Step by step this time:
You've said:
when I boot up a message comes up that an error has occured in updating.
You should delay the update on boot. I suppose you use a permanent connection to the Internet.
If you click on Settings in my signature, the first post explains how to edit the C:\Program Files\Alwil Software\Avast4\Data\avast4.ini file.
If you open this file in Notepad and browse for the section in brackets [InetWD] you must add a line like this:
AlwaysConnectedWaitSeconds=60
Where the number is how many seconds after boot avast should wait to atempt to update.
Meanwhile, when I try again to update, I get a short update process (a second) and it says update is already present.
Ok, you're updated but, if you did not delay the first one, the error will be logged.
I shut down Zone Alarm on the toolbar before trying to update. I'm not sure what else to do. I also have Spyblaster 3.3, and tried shutting it down too. But I still get this message.
You don't need to shutdown anything.
At the first time, Zone Alarm will ask you if avast.setup could connect the Internet.
Allow it and check for remember this option. This way, Zone Alarm will only ask you for this once and next time will be when you update the whole program and not just the virus database.
Hope this helps