.egsphant file generated from Python not working

[Mikerov]

I generated an .egsphant file from Python. It is attached to this post as .txt
example_not_working.txt

I am trying to initialize a XYZGeometry with it. However, I get "failed reading mass density matrix" error. I assume that the planes and material matrix are fine, and it is only the density matrix that is wrong. But I cannot understand why it is the case.

[rtownson]

Each of the lines for the density in the .egsphant file should have 20 values, but you've broken the lines into groups of 5. I think this will mess with the parser. Similarly, the voxel boundaries might also not be parsed correctly due to being split over multiple lines (there should only be 3 lines in the voxel boundaries, one for each axis).