[PyMca] PyMca crashes when running NNMA in the ROI Imaging tool

[PyMca g. p. m. list. <pym...@li...>]

Dear PyMca community,

I'm trying to run an NNMA analysis of a µATR-FTIR dataset (.fsm file) using the PyMca ROI Imaging tool. As soon as I click 'Accept' in the NNMA Configuration Dialog window, using all default settings, PyMca crashes. In the Terminal, the error message reads: "Illegal instruction: 4". I am running PyMca5.9.4 on macOS 11.7.9, and had the same issue with PyMca5.9.1.
Any suggestions to fix or work around this issue are very welcome!

with gratitude,
Joen Hermans


Dr. Joen Hermans

Assistant professor Conservation Science


Conservation and Restoration of Cultural Heritage (C&R, FGw)

Van 't Hoff Institute for Molecular Sciences (HIMS, FNWI)

Universiteit van Amsterdam


Conservation & Science

Rijksmuseum