Do not install to C:\Users\YourName\Downloads\Games\SuperLongGameName\Repack\Setup . Use a path like D:\GTA5 .
When you see this error, it essentially means the installer tried to read a piece of data and failed. It’s like trying to read a book where page 50 has been torn out. isdone.dll isarcextract unarc.dll fix download manager
The installer may fail if the file path is too long or contains special characters. Copy the installation folder directly to your or the root of your drive (e.g., C:\GameSetup isdone.dll isarcextract unarc.dll fix download manager