In the context of DODI Repacks (which use a custom compression tool), means: “CRC error in compressed data.” The installer has detected that a file is corrupted or incomplete compared to what it expects.
If you are a PC gamer who relies on repacks to save bandwidth and storage space, you have likely encountered the dreaded error. It appears as a pop-up box mid-installation, stating that "An error occurred while unpacking" or "Unarc.dll returned an error code: -12." unarcdll error code 12 dodi repack
The in Dodi Repacks is almost never a virus or a "bad repack." It is a stress test for your system's memory management and security software. By disabling your antivirus temporarily, increasing your page file to 24GB, and running the installer with the 2GB RAM limit, you will resolve 99% of these errors. In the context of DODI Repacks (which use