|Apart from the error message is your computer booting OK to Windows?|
When do you get the error message, does it just arrive when you boot up or is it when you try to do something?
Next time it happens give the "exact" error message.
If it was only AVG stuff your removed I'm surprised it affected the install of a different AV. What AV are you trying to install?
I've just checked my Windows 7 and the file is not on there. This means it is not a Windows files so it must belong to some program or other.
The more info you can give (re all the above) the better.
Always pop back and let us know the outcome - thanks
message edited by Derek