Probleme session.lock

Bonjour nn tjrs crash et voici les seul log qu'il me reste a la fin.

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[ ****** ] ~~~~~~~~~~ Starting MCEdit-Unified v1.5.4.1
[ WARNING][ mcplatform.py:1276]:Initializing window management...
Minecraft_Server.jar storage initialized.
Each server is stored in a subdirectory of C:\Users\Valentin\Documents\MCEdit\ServerJarStorage named with the server's version number
Cached servers: []
KeyError(13,)
Clipping: _Vector(x=67, y=34, z=30)
C:\Users\Valentin\DOCUME~1\MCEdit\mcedit\renderer.py:1115: VisibleDeprecationWarning: boolean index did not match indexed array along dimension 2; dimension is 16 but corresponding boolean dimension is 2
C:\Users\Valentin\DOCUME~1\MCEdit\mcedit\renderer.py:1115: VisibleDeprecationWarning: boolean index did not match indexed array along dimension 1; dimension is 16 but corresponding boolean dimension is 14
C:\Users\Valentin\DOCUME~1\MCEdit\mcedit\renderer.py:1115: VisibleDeprecationWarning: boolean index did not match indexed array along dimension 0; dimension is 16 but corresponding boolean dimension is 3
mcedit.main MCEdit exited with errors.
[ ERROR][ root.py:1009]:MCEdit version Unified v1.5.4.1 %s Minecraft 1.8-1.10 | PE 0.11
[ ERROR][ root.py:1012]:
Traceback (most recent call last):
File "mcedit.py", line 1006, in main
File "mcedit.py", line 850, in main
File "albow\root.py", line 168, in run
File "albow\root.py", line 303, in run_modal
File "albow\widget.py", line 403, in handle_mouse
File "albow\widget.py", line 485, in call_handler
File "albow\controls.py", line 240, in mouse_up
File "albow\widget.py", line 485, in call_handler
File "leveleditor.py", line 596, in <lambda>
File "leveleditor.py", line 842, in exportSchematic
File "pymclevel\schematic.py", line 809, in fromSchematic
structure = cls(size=(schematic.Width, schematic.Height, schematic.Length), mats=namedMaterials[schematic.Materials])
File "pymclevel\schematic.py", line 776, in __init__
self._check_bounds(self._size)
File "pymclevel\schematic.py", line 729, in _check_bounds
raise self.StructureTooBigException()
StructureTooBigException
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