Simulating particles & liquid in a cyclone

[tyFlow]

By the way I did some more testing in the scene you sent me...I am actually able to reproduce the crash when I run it in 3ds Max 2023, but don't get the crash when I run it in 3ds Max 2024. I stepped through the problem bit of code and it seems as though Phoenix FD is crashing specifically when sampling its data at a subframe (which explains why you don't see the crash happening when timestep is set to "frame"). It definitely appears to be a bug within the Phoenix library itself. Have you reached out to Chaos for support on the issue?

Please also double-check that you have the latest Phoenix nightly installed. My Phoenix version for Max 2023 is 5.01.00, whereas my Phoenix version for Max 2024 is 5.20.02. It's possible the bug was already fixed between those versions.