I'm pretty sure I updated the Avast! Free from 8 to 9 and now I can't get to it.
The error message I get is:
>>
C:\Program Files\AVAST Software\Avast\AvastUI.exe
The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.
<<
The Action Center (in my system tray) is now warning me that I'd better, "Find an antivirus program online (Important)".
Bob