Can you test with http://downloads.mixxx.org/builds/1.12/release/old/mixxx-1.12.0-beta1-1.12-git5431-release-macintel64.dmg
this is the last version before the 3 symlink-related pull requests that can impact you library (maybe) because yoru library looks like a symlink (different directory and track pathes)
Can you test with http:// downloads. mixxx.org/ builds/ 1.12/release/ old/mixxx- 1.12.0- beta1-1. 12-git5431- release- macintel64. dmg
this is the last version before the 3 symlink-related pull requests that can impact you library (maybe) because yoru library looks like a symlink (different directory and track pathes)