Thanks for the help. I’ve removed the pre-release tag on 0.4.1 and set 0.4.2 to latest release. It hasn’t immediately solved the issue for me, but I will check back in a little while.
(more background: merged to General registry here New version: UnitfulLinearAlgebra v0.4.2 by JuliaRegistrator · Pull Request #139543 · JuliaRegistries/General · GitHub)