BTT 3.821 crashes on startup on El Capitan 10.11.6

Currently using BTT 3.742 without problem, downloaded the latest version, 3.821 hoping to be able to use my Stream Deck on my El Capitan Mac.

Starting the new version, it crashes on start. I have done a safe boot to flush any caches and restarted, still crashes.

iMac 27" Late 2015, 4 G hz i7, 16 GB RAM, 512 GB SSD, Radeon R9 M390 2048 MB
OS X El Capitan 10.11.6
BTT 3.821

I've restored BTT to 3.742 and all is working as before, but no Stream Deck support.

BetterTouchTool_2022-07-20-131758_i7--iMac-27.crash (57.0 KB)

Checking for Alpha versions (from 3.742) results in an update error.