BuildVolumeMesh issue

[_Aka_]

Now about why the solution your tried to implement is not working:

• The Deform Mesh module deform a mesh along a path, and not on top of a volume. The module can take volumes as inputs, but use only their path, not their surface. Now I see that this is source of confusion. I will try to improve this in the future.
  
• The Bounds input of the Volume Spots module, and the V Mesh input of the Deform Mesh module, should both be linked to the same V Mesh output. This is not the case in your generator. Basically, the Volume Spots generates spots based on the bounds of the mesh, and the Deform Mesh deforms the meshes based on their spots' positions.
  
• The GuardRail mesh needed to be rotated by 90 degrees (using the TRS Mesh module)
  
• I haven't investiguated much this last point, but the result seemed wrong when using the CPs range in the Track input spline path module. Using other ranges worked fine.