The detection generic or otherwise is considered real by the user it isn't the method but the response.
The user has the option to exclude the file form scans (their choice, their risk) both on-access so they can run it and from on-demand scans if they use that function.
They can add it to the exclusions lists:
Standard Shield, Customize, Advanced, Add and Program Settings, Exclusions (right click the avast ' a ' icon)
Restore it to its original location, periodically check it (scan it in the chest), there should still be a copy in the chest even though you restored it to the original location. When it is no longer detected then you can also remove it from the Standard Shield and Program Settings, exclusions.
This is why I mentioned the first port of call really should have been this forum as this can be pointed out to them whilst any corrective action is taken.
We would first have suggested that they confirm or deny the detection by uploading the file to
VirusTotal - Multi engine on-line virus scanner and
report the findings here.
You normally don't get a response to the submissions unless they require more information, which is why I suggest to users they periodically scan the suspect file, which unfortunately if you aren't using avast you wouldn't be able to do.
