Just hoping it may have said which file was missing, though if one was missing I would have hoped that the repair (were you on-line at the time ?) would have recovered it.
Your installation would appear compromised as indicated by the Red circle with bar over the avast icon and two of the avast providers aren't running ashMaiSv.exe and ashWebSv.exe, the email scanner and the web shield.
Red Circle on avast icon - AAVM subsytem detected and RPC error.
http://www.avast.com/eng/faq-other-questions.html#idt_1539Check out this FAQ entry and see if that works.
It may however be better to do a clean reinstall. Before you uninstall ensure that you have your Pro license available, the one that was emailed to you.
Download the latest version of avast
http://www.avast.com/eng/programs.html and save it to your HDD, somewhere you can find it again. Use that when you reinstall.
Download the avast! Uninstall Utility,
find it here and save it to your HDD.
Now uninstall, reboot, run the uninstall utility, reboot, install the latest version, reboot.