Since "Gears.5.Hivebusters-CODEX.part18.rar" refers to a specific file from a third-party scene release, the "post" you are looking for is likely the original source where the download links were hosted.
Most uploaders provide multiple mirrors (e.g., Mega, Zippyshare, MediaFire). If part 18 is down on one, it may be active on another. Gears.5.Hivebusters-CODEX.part18.rar
Sometimes a specific part is corrupted upon upload, and the uploader will create a new post with a "Part 18 Fix." Since "Gears
Ensure that all parts (1 through 18 or more) are from the . You cannot mix "part 18" from a CODEX release with "part 1" from a FitGirl or DODI repack; the compression blocks will not match, and the extraction will fail. the compression blocks will not match