Avast support: How to deal with the "Last encountered error: The package is broken." problem?

If a red box in avast! pops up saying "Last encountered error: The package is broken.", it means that automatic update failed and your application needs to be updated manually.

If the manual update didn't work and your problem is still unsolved, try removing avast! completely and re-install it. Sorry, there's no other way to resolve this issue.