Blender crashes when copying and pasteing nodes for another object material

[Stugys]

Hello, when i copying one of material node setup tree of other material, and paste it to other object material setup, blender crashed 3 times so this is something that repeats..... output from windows terminal.

V-Ray For Blender: vfb_render()
V-Ray For Blender: SceneExporter::sync(0)
V-Ray For Blender: SceneExporter::sync_objects(0)
V-Ray For Blender: Started export for all objects - waiting for all.
V-Ray For Blender: SceneExporter::resize(460, 230)
V-Ray For Blender: Flushing all data to files
V-Ray For Blender: V-Ray For Blender: Thread [0] stopping.Thread [1] stopping.

V-Ray For Blender: Total sync time 0.111 sec.
V-Ray For Blender: VRsceneExporter::~VRsceneExporter()
ED_undo_push: (De)select All
V-Ray For Blender: vfb_free()
V-Ray For Blender: V-Ray For Blender: Thread [1] stopping.Thread [0] stopping.

ED_undo_push: Paste from Clipboard
Error: EXCEPTION_ACCESS_VIOLATION

[poseidon4o]

Stugys can you please upload scene that reproduces this?

[Stugys]

that error hapened in windows os using computer, I quited to work in that company this yesterday, so i cant test that any more, i just have file that i was using at that work place, and today at home (linux pc) i tryed to make same actions and it did not crash, but i got another problem blender freez and linyx
V-Ray For Blender: vfb_free()
search for unknown operator 'MESH_OT_fastscale', 'mesh.fastscale'
rna_uiItemO: operator missing srna 'mesh.fastscale'
/usr/ChaosGroup/Blender 2.78 (With V-Ray Additions)/2.78/scripts/addons_contrib/ewoc_projects_tools/object_fastorigin.py:76
[2017/Jul/27|18:13:41] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:13:41] Server not found in waiting list, ignoring
[2017/Jul/27|18:14:17] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:14:17] Server not found in waiting list, ignoring
[2017/Jul/27|18:17:21] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:17:21] Server not found in waiting list, ignoring
[2017/Jul/27|18:18:05] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:18:05] Server not found in waiting list, ignoring
[2017/Jul/27|18:20:25] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:20:25] Server not found in waiting list, ignoring
[2017/Jul/27|18:22:42] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:22:42] Server not found in waiting list, ignoring
[2017/Jul/27|18:27:36] TM_SERVER_STARTED received from (slave IP adress)
[2017/Jul/27|18:27:36] Server not found in waiting list, ignoring
V-Ray For Blender: vfb_unload()
V-Ray For Blender Error: No zmq heartbeat client running...
Saved session recovery to '/tmp/quit.blend'

* (slave IP adress) was my slave adress 192...... i just dont whant to show it public so renamed it

will send you this file