We have been receiving reports that the new release of Stremio v4.4.160 would crash on app start for MacOS High Sierra, Mojave and Catalina.
We identified that the issue comes from a SSL library which stopped support for these MacOS versions, and we issued a hotfix today.
If you are having issues starting Stremio Desktop on one of the affected OS versions, please uninstall Stremio and install again from our official downloads page.