Pi 4 Transmission Won’t Install

I’ve been running OSMC on a Pi 3 for years (thank you everyone). With Kodi 19 and the latest release I finally decided to do a clean install and move everything to a Pi 4. Mostly painless, but I can’t get Tranmission to install from the App Store.

https://paste.osmc.tv/lujuqaseji

The screen error is “Error installing:armv7-transmission-app-osmc (2.9.4-5)”.

Thoughts/hints?

Resolved.

At some point I must have tried installing from the command line (I don’t remember that, but I was trying to do a fair number of things with the new build). A couple of apt-get remove commands cleared the deck and all installed normally.