I'm using OSX High Sierra and encouter problem running the MP3Tag app.
Following some former thread i follow those steps:
1 - I first check and delete any of this folder: de.mp3tag.MP3tag.... in user/library/Application Support/
2 - Then i copied the last OSX verison of the MP3Tag to the application folder: Mp3tag v2.90a.app
When i launch it, nothing happend at all
Any Clue ???