Unity - 2017.1.1f1
STM - 1.5.2
Don't know when this happened. Could've been after upgrading Unity or it could've happened after upgrading STM. I upgraded both around the same time. I upgraded through the Unity store first, saw what happened, then tried the Itch.io version to no avail.
All of my STM components are now blank and trying to delete the old ones and/or creating new ones gives me the same empty component. Tried creating them from scratch, but same thing happens when creating a STM object.