<t>Emmanuel, I did a parameter ram restart to flush any insects. I went back to the Apple App Store and noticed the update for SH3D had disappeared. I figured I would test the upgrade again from the store and searched for the app. It showed me the cloud icon. I clicked on it and SH3D was restored ...

Puybaret,
That could possibly be the issue. I received the upgrade notice from the website prior to the Apple Store. Now the Apple Store update just hangs there. I select update but nothing happens.

I am also having this issue. Upon upgrading I keep losing the full catalog. This happened with the last upgrade.
Using:
MacOS: 10.14.6 (18G3020)
SH3D version: 6.4.2
Any help or guidance would be most appreciated. Thanks!