From e442fc9f0f3edcb08fb9ba0a0413fc46450fbe44 Mon Sep 17 00:00:00 2001
From: Sven Augustin <sven.augustin@psi.ch>
Date: Fri, 6 Feb 2026 18:57:16 +0100
Subject: [PATCH] initialize and handle missing

---
 scam.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scam.py b/scam.py
index fdbb766..1ce104e 100755
--- a/scam.py
+++ b/scam.py
@@ -81,6 +81,8 @@ class MainPanel(wx.Panel):
         self.instance = None
         self.camera = None
 
+        self.orig_cfg = None
+
         self.pls = pls = Pipelines()
 
         pl_names =  [GOOD + n for n in pls.active]
@@ -326,7 +328,7 @@ def check_incoming_cfg(cfg):
 
 
 def check_outgoing_cfg(cfg):
-    bkg = cfg["image_background"]
+    bkg = cfg.get("image_background", None)
     cfg["image_background_enable"] = "passive" if bkg else None
 
     cfg["image_threshold"] = None