Hi pk,
This is somewhat related. I use a program called PowerArchiver since it’s capable of handling almost all packers. Lately I’ve noticed that if a file is tagged as a zip file but within the zip also contains other packers, the on demand and ashQuick don’t seem to handle the file. I have to actually open the archivers interface and from with in the interface select scan.
At that point the files are uncompressed in a temp folder and then scanned by ashQuick.