DensityMatrixPlot in Mathematica 14

asked by David Tam (2024/08/06 03:04)

I have loaded the PlotTools package and received: Loaded the Quanty : Plot Tools Package - version 2021.4.6

However the first example on the help page for DensityMatrixPlot returns a white image, as well as all other examples I tried. Is there a default input to the plot command that needs to be changed for v14?