License was busted

I had a license. I updated Unity. Now they’re saying my version is unregistered and temporary. It’s a pain to hunt down HR and get a new license number. How can I restore my old license? Has it been overwritten? Can this major bug be fixed for future updates?

You have to get a new license for every update… this is nothing new. If you want to ‘restore’ your old license, uninstall Unity 3.4, reinstall your previous version, and use your license there.

Simple as that, really.