Select or "Extract to HpHp2/" from the context menu.
Ensure all parts (part1, part2, etc.) are in the same folder and have identical names before the ".partX" suffix. One of the parts is corrupted. HpHp2.part1.rar
: A free, open-source alternative that supports RAR extraction. PeaZip : A good choice for Linux or Steam Deck users. Start the Extraction Select or "Extract to HpHp2/" from the context menu