| Best Practice | Reason | |---------------|--------| | Always verify .sfv before installing | Catches corrupted downloads immediately | | Keep 50GB+ free on install drive | Room for temp + final files | | Install on SSD when possible | Faster extraction, fewer timeouts | | Disable AV only during repack installation | Most repacks contain crack files that AV flags | | Run installer in Windows 7 compatibility mode | Fixes some permission oddities on Win10/11 |
If none of the above works
During a repack installation, the ISDone.dll (often alongside Unarc.dll ) is responsible for decompressing the game's files and placing them onto your hard drive. If there’s any hiccup during this process—whether it’s a corrupted file, insufficient system resources, or a hardware conflict—the installer will fail and throw an error related to ISDone.dll .
: Right-click the ElAmigos setup.exe and select "Run as Administrator" to ensure the installer has full write access to the disk.
Booting Windows in Safe Mode loads a minimal set of drivers and stops background services (like aggressive antivirus or updates) from interfering with the decompression process.
Open Command Prompt as Administrator and run:
The installation directory is too deep or contains special characters. How to Fix isdone.dll/unarc.dll Errors (ElAmigos)
Many ElAmigos or FitGirl-style installers have a checkbox at the start that says .
This is the most successful solution. Giving Windows a massive cushion of virtual memory prevents decompression tasks from crashing when system RAM fills up.