7z ver0.4 is fail

[shatian114]

[peng@pengArch assets]$ file hook.7z hook.7z: 7-zip archive data, version 0.4 [peng@pengArch assets]$ rarcrack --type 7z --threads 12 hook.7z RarCrack! 0.2 by David Zoltan Kedves ([email protected])

INFO: the specified archive type: 7z INFO: cracking hook.7z, status file: hook.7z.xml GOOD: password cracked: '9' GOOD: password cracked: '8' GOOD: password cracked: '1' GOOD: password cracked: '4' GOOD: password cracked: 'a' GOOD: password cracked: '5' GOOD: password cracked: 'b' GOOD: password cracked: '7' GOOD: password cracked: '6' GOOD: password cracked: '0' GOOD: password cracked: '3' GOOD: password cracked: '2' ver 0.2 is ok ver 0.4 is fail

[jaredsburrows]

So version 0.2 of .7z files work? but not 0.4?

Also does it have to do with threading? What does rarcrack --type 7z hook.7z output?