I have the same issue. It worked just fine but now the launcher is blank grey screen that does not respond and I have to force quit it.
Luckily I found a solution. instead of only deleting ~/Library/Application Support/minecraft/launcher
I deleted all of ~/Library/Application Support/minecraft/
BUT I made sure I took a copy of the saves folder first.
Then I reinstalled the app and launched it. Put the saves folder back and it's now working.
Adham Zahran
I have the same issue. It worked just fine but now the launcher is blank grey screen that does not respond and I have to force quit it.
Luckily I found a solution. instead of only deleting ~/Library/Application Support/minecraft/launcher
I deleted all of ~/Library/Application Support/minecraft/
BUT I made sure I took a copy of the saves folder first.
Then I reinstalled the app and launched it. Put the saves folder back and it's now working.