D.A.R.T. (Damaged Archive Repair Tool) is a specialized utility primarily used by the Euro Truck Simulator 2 (ETS2) and American Truck Simulator (ATS) modding communities to repair and "unlock" .SCS archive files.
The tool is often used when mod files appear "damaged" or in an "unknown format" to standard extraction tools like WinRAR or 7-Zip. Purpose and Functionality
Mod creators sometimes intentionally "damage" the headers of .SCS archives (which are essentially renamed ZIP files) to prevent others from extracting or modifying their work. While the game engine can still read these modified files, standard archive software cannot. D.A.R.T. was designed to:
Repair Headers: Restore the archive's internal structure so it can be opened.
Unlock Mods: Allow users to extract assets for personal compatibility fixes or updates.
Handle Passwords: Remove password protections from certain archive directory trees. How to Use D.A.R.T. The process generally involves the following steps:
Import File: Drag and drop the locked or damaged mod file into the D.A.R.T. interface.
Configure Settings: Access the "Archive Processing Settings." Ensure options like "Extract unresolved entries" are enabled if the initial extraction is incomplete.
Process: Run the tool to generate a repaired version or an extracted folder.
Identify Missing Paths: If files are missing, users may need to check the "unresolve" folder, copy the correct file paths from a text editor, and re-run the process in D.A.R.T. to fully extract all assets. Availability and Status
Discontinued: Official development for the project (often associated with "TheLazyTomcat" or "Sniper") has been discontinued on platforms like GitHub.
Community Resources: The tool is still frequently discussed and shared within the SCS Software Forums and Steam Community.
Note: Do not confuse this with the "dart fix" command-line tool, which is used by developers for the Dart programming language to repair analysis issues in code. Unlocking .scs files - SCS Forum - SCS Software
Limitations of DART: What It Cannot Fix
No damaged archive repair tool is magic. Be aware of these limitations:
- Data overwritten with zeros: If a sector physically failed and returned
0x00, DART cannot guess what used to be there. - Encrypted archives (AES-256): If the encryption header is corrupted, DART cannot decrypt the stream, regardless of the password.
- Solid archives (7z/RAR5): DART primarily focuses on ZIP. For solid RAR files, you need RAR-specific tools (like RAR Repair Tool).
- File names lost: If the local header is destroyed and only payload remains, DART will extract data as
UNKNOWN_1.bin.
Preventive measures
- Use checksums (SHA256) when storing or transferring archives to detect corruption early.
- Use redundant backups (versioned backups, RAID, cloud storage) to avoid single-point failure.
- Verify archives immediately after creation and after transfers.
- For critical archives, consider archival formats with built-in redundancy (e.g., PAR2 parity files) to allow reconstruction of missing data.
Usage
# Basic repair
dart damaged_archive_repair_tool.dart corrupted.zip
3. Validation & Statistics
- Tests repaired archive integrity
- Provides detailed repair statistics
- Logs all repair methods applied
Step 5: Save and Verify
After the repair process, DART Fix will prompt you to save the repaired file (usually under a new name to prevent overwriting). Crucially, always attempt to open the repaired file immediately to verify that the data has been successfully recovered.