You downloaded a police car or supercar mod. The instructions said: "Replace the files in patchday4ng/dlcpacks/dlcpacks/patchday4ng/dlc.rpf/..." (Notice the double dlcpacks ? That is a typo).
: Approximately 312,438,784 bytes (roughly 298 MB) . update x64 dlcpacks patchday4ng dlc.rpf
with the "Edit Mode" enabled. It is highly recommended to use a "mods" folder to avoid corrupting your base game files: Navigate to update/x64/dlcpacks/patchday4ng/ in OpenIV. Click the notification to "Copy to mods folder" if you haven't already. to find the subfolders containing levels and models. 3. Best Practices for DLC Updates Back Up Your Files: Before replacing any files inside , export the original files so you can revert if the game crashes. Check for Conflicts: You downloaded a police car or supercar mod
What you’ll need
Use OpenIV’s Mods Folder .