Ensure you have all parts of the set. Missing even one part will cause a "checksum error" or "unexpected end of archive."
Right-click H3DODI.part01.rar (or the first part) and select "Extract Here." The software will automatically pull data from Part 13 during the process. H3DODI.part13.rar
Since specific metadata for this exact string is sparse in public databases, here is a professional, versatile template you can use to create the post. Ensure you have all parts of the set