Your system might have an ancient version.
DODI repacks require both significant disk space (for decompression) and RAM (for unpacking). Error code 1 can appear if either runs out.
Fix:
Repacks modify executable files to bypass DRM (cracking). Windows Defender and 3rd party antivirus software often detect this as a "HackTool" or "Trojan" and silently block the unpacking process, resulting in Error Code 1.
The Fix:
If your destination drive (where you are installing the game) has bad sectors or is failing, Windows will write-protect parts of the drive. When the installer tries to write file XYZ.bin to a bad sector, Windows returns a "write fail," which the installer interprets as Error Code 1.
If step 4 works temporarily, permanently increase your page file. dodi repack error code 1 new
Every legitimate Dodi repack includes .md5, .sha1, or .bat verification files.
Corrupted VC++ runtimes cause Unarc to fail. Your system might have an ancient version