I'm receiving an error that prevents an 8 gb file from being copied to a new 500 gb hard drive I just got.

I recommend getting the free version of HardDisk Sentinal, tree climb via Disk, Surface Test, choose the HDD, Read Test -- DiskRepair (read test with sector repair). It will take some time! I think any marginal and going-bad sectors will be locked out. Upon completion, probably after all Star Wars have been watched, you can do a Windows Restart.
Try the copy operation again, please report back with your results.
The quick tests are ok too, however, such probably will not lock out marginal or going-bad sectors. Check with Arch, he knows this stuff better than I do.

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"Take care of thy backups and thy restores shall take care of thee." Ben Franklin revisited

This is what I got upon launch

Unfortunately, when I follow the prompts you gave, I am asked to register for 30

I do not advice repair before data backed up. Problem could grow .
"Roadkils Unstoppable coppier" free small and capable to get files even has bad sectors.

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Sexy Womans from your town

The OP was advised to test the target, not the source.

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A backup a day keeps DR away.

I seem to remember the problem in the first post can be caused by using Windows 10 64 bit os. If that is the case here?
I would just use any free version of Dmde to do the same job.

Upfront admission- I have the pay-for license package for HardDisk Sentinal, I did not know the free version's deep tests required registration and/or pay-for license. Maybe Arch could give us more information as to how deep will the free HDS go?

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"Take care of thy backups and thy restores shall take care of thee." Ben Franklin revisited

I am using Windows 10