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.
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The Action Center (in my system tray) is now warning me that I’d better, “Find an antivirus program online (Important)”.

Bob

I have Windows 7, 64-bit.

I’ve been having problems with unreadable blocks on my hard drive.

I have Spybot S&D and the firewall that comes with Windows.

It was the program update.