After getting the expiration message on the old WIP over the weekend, I uninstalled it, rebooted, and then installed the new WIP this morning (6.0.15237.13491, 8/25/2015). However, it still comes up and says it has expired and it disables save operations.
Any ideas what causes this and how to fix it? I have now uninstalled and reinstalled a few times with no effect.