UPDATE: I seem to have arrived at a fix for this problem, which does not require an uninstall:
1) Download the newest version of Avast! (4.7.817).
2) Close all currently running programs.
3) Open the new Avast! set-up file.
4) Click on the "change" option.
5) You should see a list of "resident protection scanners" with check-marks.
6) Click on the "next" option and wait.
7) You should be successfully updated and "good to go"!
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Hi,
I like to know where you go to the set-up file on your item 3, for the option "change".
Regards and thanks
Jean
Montreal