Diablo 3 detected corrupted data pops out when killing diablo
Exit Diablo III, then run a Scan and Repair…
On a side-note, I was going to quote part of your post in my reply, but the forum software prevented me from doing so because it considers the first four characters of your account name to be a problem.
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Been there done that and it says " whoops looks like something broke "
I did that also and now this is my 3rd time uninstalling and re-installing the game.
If uninstall/reinstall doesn’t work, contact Blizzard Support directly with a ticket: https://us.battle.net/support/en/help/contact/1396/ticket
You may want to include a screenshot of the popup message with your ticket.