Your current path might be: C:\Users\YourName\Downloads\Torrents\Games\SuperGame\Repack\Setup.exe
Create an exclusion folder in your antivirus for the download directory. This prevents the AV from interfering with Unarc.dll as it writes thousands of small files. isdonedll error unarcdll error7 best
If you tell me you are trying to install, I can provide specific steps for that installer's common quirks. isdonedll error unarcdll error7 best