Siggytee Said:
"Erased my disc. Reinstalling my OS and getting this error 'Can’t download the additional components needed to install Mac OS X.' Please help!"
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Troubleshooting Reinstalling the macOS:
A. Use Ethernet:
I assume you are using WiFi. So, try Ethernet, inserted to get a more reliable connection (being a directly connection to the router).
B. Having Any Backups Of your Mac?:
Important: Be certain to create a backup of your Mac prior to all of this. That way, you can have something to restore from the Mac from, should anything go wrong with the reinstall. If not, then take this as a learning experience, knowing to always do so, prior to performing any major change, scubas an update or erasing the disk.