File ".../image.py", line 51, in getFilename isys.umount("/mnt/source") File ".../isys.py", line 116, in umount rc = _isys.umount(what) SystemError: (16, 'Device or resource busy') This is with the GUI installer, just clicking next except to put in a root password. The package it's about to try installing is locale-ja-9-4. (This is against anaconda since I can't see an installer component.)
Fixed.