What is the exact file name that is being detected, surely that isnβt 1.29GB unless it is detecting the installation file as infected.
What is the infected file name, where was it found e.g. (C:\windows\system32\infected-file-name.xxx) ?
Check the avast! Log Viewer (right click the avast βaβ icon), Warning section, this contains information on all avast detections.
Sorry, maybe I was not clear :-\ It detects the installer as infected, NOT the installed patch
I Just found out that the installer of the Demo of the same game got the same message from Avast :-\
It is not that I have a problem with it, but I am sure the Dev Team would like to know why Avast flags those installers so they can prevent it in the future
You could send a false positive report without attaching a sample, basically a copy of your first post with a little more info, like the actual file name (installer, patch or otherwise) send it to virus @ avast.com (without the spaces).
If you are happy that you believe it is a false positive, you could exclude the file from scans until it is corrected.
If it is indeed a false positive, add it to the exclusions lists: Standard Shield, Customize, Advanced, Add and Program Settings, Exclusions
Periodically check it (scan it, or visit the site) and see if it is still detected. When it is no longer detected then you can also remove it from the Standard Shield and Program Settings, exclusions.