Unfortunately, updating from 268 to 278 has caused some problems. It varies from OS to OS and in the manner of update.
My XP machine updated automatically to 278 without a hitch, but my W98 did not seem to even try to update.
I did a manual update and received the "broken packet" error.
I did NOT manually update my older version to 268 so I do not hold to the theory that the problem is caused by manually updating to 268.
I did examine the content of the Avast Setup folder and noticed as Kubey stated in his comments.....that there are 2 setup files 10c and 116.
Instead of deleting 10c, I just renamed it and tried the update again. THIS WAS SUCCESSFUL.
I noticed that the most of the dll files were overwritten and the setup file 116 updated.
Apparently, there is a confusion to AVAST when it attempts to utilize setup10c and setup116.
I would recommend that 10c be deleted or renamed first.
This is simpler to do, and seems to be a proper fix. I will not be able to tell if this works long term until my AVAST autoupdates.
