Boygrouping Point Editor / VertexBuffer

I tried to Boygroup a Vertexbuffer to use a Point Editor to modify a a Mesh to do some Projection correction, the Point Editor is working on the server but as soon as I Boygroup the PointEditor and the VertexBuffer it is not working anymore, any suggesgtions on that?

see the helpatch of PointEditor (3d Persistent Sandwich)