An error occurred validating the installer data. The download is either damaged or incomplete.

I've spent a lot of time on this project of mine. I really enjoy doing this kind of stuff and learning what makes a computer tick. Any help that I can get, I truly will be so grateful!

  • CPU: Intel Core i7-8750
  • GPU: Nvidia GTX 1070 max q
  • RAM: 32 GB
  • Motherboard/Laptop model: HM370 / MSI GS65 8RF Stealth
  • Audio Codec: Nahimic Audio
  • Ethernet Card: Killer N1550 Combo (2*2 ac)
  • Wifi/BT Card: Killer Gaming Network E2500
  • What guide/tool followed: OpenCore Install Guide
  • What part I got an issue with: I am having difficulty with installing the MacOS onto my harddrive. First I tried BigSur, and the problem was that when it went to restart at the 12 minute marker it would freeze. I left it for several hours with no luck. I researched a bunch online and it seems that people were saying to start at Catalina and then you can upgrade to BigSur later.
    > I made a Catalina flash drive with all the EFI ready as well.
    >Boot into the flash drive, reformat the partition that I've given MacOS to use. AFPS file system.
    > I start the installer, it hangs at about the two minute mark with "An error occurred validating the
    installer data. The download is either damaged or incomplete."
    > I've tried using both the files that were given from the script in the guide, and also from the mac app store. No luck.

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