If you skipped downloading certain language .bin files, uncheck those languages during installation to avoid missing file errors.
The file is a specific belonging to a multi-part RAR set. When games are "repacked," the installer data is often split into smaller pieces (Part 1, Part 2, Part 3, etc.) to ensure easier downloading and to bypass file size limits on certain hosting platforms. The naming convention tells us several specific things: setup-fitgirl-selective-german.bin.part3.rar
If any part is missing or corrupt, the reassembly fails with a CRC error. If you skipped downloading certain language
The file setup-fitgirl-selective-german.bin.part3.rar is neither mysterious nor dangerous – when obtained from a trusted source. It is simply a fragment of a larger data file designed to save bandwidth and allow selective language installation. setup-fitgirl-selective-german.bin.part3.rar