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@@ -309,6 +309,8 @@ def default_update(ui_socket, context, do_execute=True):
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node_tree = context.space_data.path[0].node_tree
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except IndexError: # not in the UI, for example, in a script instead.
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return
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+ if node_tree is None:
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+ return
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if node_tree.is_executing or node_tree.is_exporting or not node_tree.do_live_update:
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return
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# if it is a Schema Node, it will fail the checks below -- but we need it to update the tree.
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