Runtime Error on Adaptive/PMV/UTCI Comfort Maps – “SplitModifiers” Failed on Mac

ladybug-tools
1

Hi everyone,

I’m encountering an issue when trying to generate Adaptive Comfort Map, PMV Comfort Map, and UTCI Comfort Map using Ladybug Tools installed on Rhino 8 for macOS.

Here’s the error message I get:

Runtime error (PythonException):
The recipe failed to run with the following error(s):

2025-06-25 09:32:51 ERROR: “SplitModifiers” failed. See below for more information:
Error: No such command ‘modifier’.

Execution Summary
Scheduled 57 tasks of which:

  • 40 ran successfully:
    • 1 CopyGridInfo(…)
    • 1 CopyRedistInfo(…)
    • 1 CopyResultInfo(…)
    • 1 CreateDirectSky(…)
    • 1 CreateDynamicOctrees(…)
      …
  • 1 failed:
    • 1 SplitModifiers(…)
  • 16 were left pending, among these:
    • 2 were missing external dependencies:
      • 1 RunSphericalViewFactorSimulation(…)
      • 1 RunSphericalViewFactorSimulationLoop(…)
    • 3 had failed dependencies:
      • 1 CalculateSphericalViewFactors(…)
      • 1 RestructureViewFactor(…)
      • 1 _SphericalViewFactorEntryPoint_6b5ce744Orchestrator(…)
    • 9 had missing dependencies:
      • 1 LetAdaptiveComfortMapFly(…)
      • 1 RestructureConditionIntensityResults(…)
      • 1 RestructureConditionResults(…)
      • 1 RestructureCspResults(…)
      • 1 RestructureHspResults(…)
        …
    • 2 was not granted run permission by the scheduler:
      • 1 RunSphericalViewFactorSimulation(…)
      • 1 RunSphericalViewFactorSimulationLoop(…)

This progress looks :frowning: because there were failed tasks

Traceback:
line 191, in script

I’ve already tried the following steps:

  • Reinstalled Ladybug Tools (LBT 1.8.0)
  • Reinstalled Radiance (5.4a 2022-04-07 LBNL (5.4.b268408ad5))
  • Reinstalled OpenStudio (3.7.0+d5269793f1)

Unfortunately, the error still persists.
Has anyone faced a similar issue? Could this be a Mac-specific path/configuration problem?
Any guidance would be greatly appreciated!

System Info:

  • Rhino 8 for macOS
  • macOS 15.5 (M2)
  • Ladybug Tools: 1.8.0
  • Radiance: 5.4a 2022-04-07 LBNL (5.4.b268408ad5)
  • OpenStudio: 3.7.0+d5269793f1

Thanks in advance!

2

Hi @aprachman and welcome to the forum.

This command was added to the core library ten months ago. If you update the core libraries with LB Versioner you should be able to run it – leave the version_ input empty and it will automatically select the latest.