Running into this error - "Error: Failed to set default application: The file couldn’t be opened." This seems to be happening for extensions that I haven't opened yet (md, json, mailto, etc.) For a new laptop, this might not be available yet. Once I `touch` a file with those extensions, the config works!. FYI, I am using a config.toml file btw.

Okay, confusing -- just tried to replicate on my machine and couldn't get that error. When you say touch, you mean creating a file with that extension, or any interaction period?

Could you please try to replicate with verbosity enabled (-v) and email me the output or file an issue at the repo with the results and full summary? It's helpful for tracking. Sorry this isn't a quick fix :(