The patch installer at the link below fixes the crash issue with the ColorMunki Design application at startup on Mac OS X El Capitan 10.11. The crash is happening as the palette colors are converted from LAB to the display's color space. This conversion was supported with no issues on all previous versions of Mac operating systems. X-Rite has opened an issue with Apple tech support and they are investigating this matter.
To resolve this ColorMunki Design startup crash on Mac OS X El Capitan 10.11, please do the following:
Link to the X-Rite ColorMunki patch for Mac OS X El Capitan 10.11:
***NOTE - THIS PATCH SHOULD BE PERFORMED ONLY ON MAC OS X 10.11 (EL CAPITAN).