Publish a library

[ScruffR]

Is this your legacy repo?

GitHub - ClassTech/NtpTime

I've seen another user report a similar issue with his upload

Migrating library to new library manager (Library not valid error)

I received the email about migrating your library. I tried following the directions for the desktop IDE but struggling. I’m trying to migrate RFM69-Particle. Has it already been migrated? How can I confirm? (I see it already has a library.properties file and it appears to be available in the desktop IDE). Selecting “manage current library” there is no “migrate this library” button. When I do try to upload the library I receive an error that “Library is not valid. main source is missing main he…

In both cases I can't see the actual problem either.

@jvanier

Does your library still compile if you rename the .c to .cpp?

The repo already has a .cpp file in place, so I'd suppose there's another reason.