diff --git a/scripts/add_external_models.sh b/scripts/add_external_models.sh
index 2b453cc..ce8fa1a 100755
--- a/scripts/add_external_models.sh
+++ b/scripts/add_external_models.sh
@@ -3,13 +3,13 @@ set -e
 
 if [ -n "$COMFYUI_INSTALLER_DIR" ]; then
     if [ -f ".settings" ]; then
-        pirntf "source [\033[0;32m.settings\033[m]"
+        printf "source [\033[0;32m.settings\033[m]\n"
         source .settings
     elif [ -f "scripts/.settings" ]; then
-        printf "source [\033[0;32mscripts/.settings\033[m]"
+        printf "source [\033[0;32mscripts/.settings\033[m]\n"
         source scripts/.settings
     else
-        printf "[!] No settings file found. Please run the setup script first."
+        printf "[!] No settings file found. Please run the setup script first.\n"
         exit 1
     fi
     sleep 1
@@ -28,7 +28,7 @@ EXTRA_MODELS() {
             printf "[!] [\033[0;32mExtra Model Paths\033[m] file found, creating backup.\n"
             cp "$COMFYUI_DIR/extra_model_paths.yaml" "$COMFYUI_DIR/extra_model_paths.yaml.bak"
         fi
-        cat <<EOF >>"$COMFYUI_DIR/extra_model_paths.yaml"
+        cat <<EOF >"$COMFYUI_DIR/extra_model_paths.yaml"
 comfyui:
     base_path: $EXTERNAL_MODELS_DIR
     # You can use is_default to mark that these folders should be listed first, and used as the default dirs for eg downloads
@@ -38,8 +38,10 @@ comfyui:
     clip_vision: models/clip_vision/
     configs: models/configs/
     controlnet: models/controlnet/
-    diffusion_models: |
-    models/diffusion_models
+    # --- FIX ---
+    # The previous multi-line definition for 'diffusion_models' was incorrect
+    # and caused a YAML syntax error. It has been corrected to a single line.
+    diffusion_models: models/diffusion_models/
     lora: models/lora/
     upscale_models: models/upscale_models/
     vae: models/vae/