Then, disaster. The installer vanishes or throws the dreaded: “An error occurred while unpacking: archive corrupted! Unarc.dll returned an error code: -1... isdone.dll.”
The error typically looks like this:
3x your physical RAM (e.g., 24576 MB for 8GB RAM). Click Set , then OK , and Restart your computer. 2. Disable Real-Time Security
If these steps fail, the download itself may be corrupted. Try re-downloading the game or checking the hashes of your installation files.
Click the and type Windows Security , then press Enter.
Many "isdone.dll" errors occur because the system runs out of memory while unpacking heavily compressed files. Right-click Properties Advanced system settings Performance Uncheck "Automatically manage paging file size." Select your Custom size , and set the sizes to at least (or 1.5x your physical RAM). , then restart your PC. 3. Move Installer to a Shorter Path
isdone.dll error during an repack installation usually indicates a failure to decompress files
Equal to your physical RAM (e.g., 8192 for 8GB, 16384 for 16GB).
Modern hybrid architectures featuring high thread counts can overwhelm older compression utilities, causing data desynchronization. Limiting processor states or cores can stabilize the environment.
