ISDone.dll/ An error occurred when unpacking! Unarc.dll returned an error code

Sometimes, users face this type of error when installing the game:

Solution

1. Download ISDone.dll and Unarc.dll from the links below:
   • ISDone.dll: Download Here
   • Unarc.dll: Download Here
2. Extract the downloaded files using WinRAR.
3. Copy both DLL files (excluding the ReadMe file).
4. Paste them into the following directories:
   • C:\Windows\System32
   • C:\Windows\SysWOW64
5. Reinstall the game.
6. When installing the game, enable the Limit installer to X GB of RAM usage option (if available).