ImportError with libgfortran.5.dylib causing numpy to fail and MNE 1.9.0 not to load

Hello @jedmeltzer,

I only have a MacBook Pro with an M2 chip available, running macOS Sequoia 15.5. No problems here with the 1.10.0 installer from:

https://github.com/mne-tools/mne-installers/releases/download/v1.10.0/MNE-Python-1.10.0_0-macOS_M1.pkg

May I ask which architecture you’re using? Intel or Apple Silicon? Have you tried with the new 1.10.0 installers?

Thanks!
Richard