From 9fdd374914b352171ce994ea2060c8b3ce2d108e Mon Sep 17 00:00:00 2001
From: Ben Rugg <ben@theregime.com>
Date: Fri, 14 Apr 2023 11:42:30 -0500
Subject: [PATCH] =?UTF-8?q?Fix=20bug=20where=20scene.node=5Ftree=20doesn?=
 =?UTF-8?q?=E2=80=99t=20exist?=
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---
 __init__.py  | 2 +-
 operators.py | 7 ++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/__init__.py b/__init__.py
index 4045a24..f8acdb6 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,7 +2,7 @@
     "name": "AI Render - Stable Diffusion in Blender",
     "description": "Create amazing images using Stable Diffusion AI",
     "author": "Ben Rugg",
-    "version": (0, 7, 7),
+    "version": (0, 7, 8),
     "blender": (3, 0, 0),
     "location": "Render Properties > AI Render",
     "warning": "",
diff --git a/operators.py b/operators.py
index e5f83c6..7d51dba 100644
--- a/operators.py
+++ b/operators.py
@@ -35,9 +35,10 @@ def enable_air(scene):
 
 
 def mute_legacy_compositor_node_group(scene):
-    legacy_node_group = scene.node_tree.nodes.get('AIR')
-    if legacy_node_group:
-        legacy_node_group.mute = True
+    if scene.node_tree and scene.node_tree.nodes:
+        legacy_node_group = scene.node_tree.nodes.get('AIR')
+        if legacy_node_group:
+            legacy_node_group.mute = True
 
 
 def ensure_air_workspace():