Hey Guys! I have finally gotten sick of my client because I do a lot of building and if you've used am0d, you know it is awful for that. I have been trying to get a new client to come up in versions. I am doing it the same way I always have, is there something different I have to do now with the new launcher? Why is am0d working and not others.
Mac sucks. But yeah there's a kinda different process with the new launcher. After you put your client in the appdata you have to launch MC and go to Launch Options > Add new > select your client > back to "news" and select your client Otherwise if it's failing to launch, it's probably a problem with the client you downloaded.
It was being strange with everything, I just deleted everything related and redownloaded and used this. Thanks homie @Sir-Teabag