I have updated the auxiliary files fix(auxiliary): update auxiliary files by MingboPeng · Pull Request #25 · LBNL-ETA/Radiance · GitHub.
It will be available after @Taoning_Wang merge the PR.
For rvu, I don’t have any issue with rvu on my mac. It works with both X11 (installed the newest XQuartz 2.8.1) and Qt, but mine is macOS Big Sur 11.2.
I don’t have 10.15 for testing. Maybe @Rob_Guglielmetti might be able to provide some insights here.