Streamlines.PrincipalMesh genericparameter input not read

[MSRChurch]

Streamlines.PrincipalMesh is set to genericparameter output and input to transfer data between components. Latest version of GH package results in an error in components trying to read the PrincipalMesh data. Look into "GH_ObjectWrapper Class" to fix this.

https://developer.rhino3d.com/api/grasshopper/html/T_Grasshopper_Kernel_Types_GH_ObjectWrapper.htm
https://discourse.mcneel.com/t/datatypes-and-generic-data-component/140455/2

[MSRChurch]

Fraser has made a nice guide to this:
https://frasergreenroyd.com/how-to-pass-custom-data-between-grasshopper-components/

[MSRChurch]

Issue seems to be intermittent