About a third through the 3.4 patch I continuously get an error code.

Code is:

Unable to update patch files.
[11006][20819][20890][19900][3]
SqPack:0x3-0x0-0

Numbers are always the same.

I've tried closing it down and restarting, and it attempts to recommence version update, and then gives that same error.

I've tried running as admin, deleting the files in the folder: FFXIV/downloads/ffxivpatch.

I've tried restarting my PC, I've tried rebooting my internet.

So far, nothing is working. And I don't know what to do from here.
I *really* do not want to have to uninstall and reinstall the game. That's going to take like 10 hours for me.