generative modeling for Rhino
You could try constructing each of the 6 enclosing walls as a separate solid brep-object for collide srf.
I tried that but now whenever the particles collide with the container they are becoming null which is messing with the distribution density i need.
you don't get the error if you degrease the Strength value of the PLaw Component.
(I tested it with 0.47 and 0.52)
But I don't know yet exactly why this error occures.
I found it works with collidemesh, but not with collidesurf.
I'm not sure what has changed to make the surface collision stop working, but I'll look into it.
Also - Repulsion forces with an exponent of -1 will tend to very quickly just push all the particles to the edges and corners.
If you are trying to distribute the points in the volume, I suggest using springs with cutoffs instead