Hi LaoyeChan, objects will fail to load if the ID changes or if they go missing altogether. If you've opened another file the surface might be missing, or if you have performed some sort of action on the surface (like Copy) which changes the ID, then grasshopper will also lose track of it.
Have you tried referencing the surface again? -- David Rutten da...@mcneel.com Robert McNeel & Associates On May 4, 2:52 pm, LaoyeChan <qianc...@gmail.com> wrote: > i have just updated my grasshopper to 0.6.0012 and when i set one > surface in rhino it said "surface with ID xxxx failed to load"But i > was able to load it in the latter version of gh before. What's the > problem with it? > see the pic here:http://groups.google.com/group/grasshopper3d/web/ > error.bmp > thank you.