Access Violation and TDBRow Out of Bounds

MainType 12.0 showed these errors on first launch, and now crashes on launch.
Index Out of Bounds.png
MainType Access Violation.png

That is really bad! Does this update fix the issue?
https://www.high-logic.com/tmp/maintype/MainTypeSetup12.0.0.1288-x64.exe

Yes. Installs and launches OK now.

That is good to know. I will upload the new release in a minute.