Hi Mostapha
That does make sense as I am working a very large project imported from Revit. So even though I have cleaned the model manually, it is not as clean as a model created specifically for the purpose.
I just tried using the compressed model as input as you suggested, but got the same error
The model includes 7543 sensor points in total distributed over 64 sensorplanes. I use a grid density of 0.5m, which is fairly coarse. Most planes have 150-200 sensor, but there is one with 300 sensor points.