Fire and smoke transparency in Windows 11

[rmcdermo]

Please bear with me, as I am not a Windows user since decades ago. But I'm trying to set up a bunch of Windows 11 laptops for a student demo of FDS and Smokeview. I run the "simple_test.fds" example (fds/Verification/Fires/simple_test.fds for those who use a repo). I'm using the latest nightly test bundle of FDS-SMV from here. When I load HRRPUV alone, all seems fine (see left image). But when I then load SOOT DENSITY everything becomes very faint (see right image). @mcgratta tried this on his older Windows machine and did not see the problem, so I suspect this is somehow Windows 11-related. Can anyone else with Windows-11 please try this and let me know if you get the same? Thanks

[Er9y714]

I tried on win 11.

[rmcdermo]

Well, this turned out to be user error. I had changed the input file to use a very low soot yield (a year ago) and had forgotten. Switching the actual verification case with propane and 0.01 soot yield and things look reasonable.