It appears using the attribute reader with the shape location module set to torus will cause NaNs. The log mentions Sphere Radius among them, which should not be used with the torus mode.

Steps to Reproduce
  1. Navigate to the linked UDN case and download the attached project
  2. Open the project and look at the two Niagara systems in the level verify that one has particles in a ring, and the other appears to have no particles
  3. Open the output log and verify the NaNs have been logged
  4. Open the system that has no particles in the Niagara editor


The system will work correctly after opening it in the Niagara editor


The system will behave as expected when loaded.

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ComponentUE - Niagara
Affects Versions5.25.3
Target Fix5.4
Fix Commit27693997
Main Commit27694043
CreatedSep 5, 2023
ResolvedSep 7, 2023
UpdatedSep 12, 2023