WDS "Configure Server" fails. "Share name is already in use on this server"
Figured it out. I'm a goof.
I had tried using net share before to see if what I was using was still in use from the previous WDS install, and simply didn't notice the "REMINST" share at the bottom of the list. Bleh. A simple net share REMINST /delete solved my issue. We're back in business.