diff --git a/codex-launcher_2.4.0_all.deb b/codex-launcher_2.4.0_all.deb
index 208f14a..e9e008e 100644
Binary files a/codex-launcher_2.4.0_all.deb and b/codex-launcher_2.4.0_all.deb differ
diff --git a/src/codex-launcher-gui b/src/codex-launcher-gui
index d8bb6c7..94da304 100755
--- a/src/codex-launcher-gui
+++ b/src/codex-launcher-gui
@@ -410,22 +410,26 @@ def write_config_for_native(endpoint, selected_model):
     mc_path.write_text(json.dumps(model_catalog, indent=2))
 
     lines = [
-        f'model = "{selected_model}"\n',
-        f'model_provider = "{endpoint["name"]}"\n',
+        f'model = "{_toml_safe(selected_model)}"\n',
+        f'model_provider = "{_toml_safe(endpoint["name"])}"\n',
         f'model_catalog_json = "{mc_path}"\n',
         f'\n[model_providers."{endpoint["name"]}"]\n',
-        f'name = "{endpoint["name"]}"\n',
-        f'base_url = "{endpoint["base_url"]}"\n',
-        f'experimental_bearer_token = "{endpoint["api_key"]}"\n',
+        f'name = "{_toml_safe(endpoint["name"])}"\n',
+        f'base_url = "{_toml_safe(endpoint["base_url"])}"\n',
+        f'experimental_bearer_token = "{_toml_safe(endpoint["api_key"])}"\n',
         f'\n[profiles."{endpoint["name"]}"]\n',
-        f'model_provider = "{endpoint["name"]}"\n',
-        f'model = "{selected_model}"\n',
+        f'model_provider = "{_toml_safe(endpoint["name"])}"\n',
+        f'model = "{_toml_safe(selected_model)}"\n',
         f'model_catalog_json = "{mc_path}"\n',
         f'service_tier = "default"\n',
         f'approvals_reviewer = "user"\n',
     ]
     CONFIG.write_text("".join(lines))
 
+def _toml_safe(val):
+    val = str(val).replace('"', '\\"')
+    return val.split('\n', 1)[0].strip()
+
 def write_config_for_translated(endpoint, selected_model):
     """Write config pointing at local proxy."""
     backup_config()
@@ -435,16 +439,16 @@ def write_config_for_translated(endpoint, selected_model):
     mc_path.write_text(json.dumps(model_catalog, indent=2))
 
     lines = [
-        f'model = "{selected_model}"\n',
-        f'model_provider = "{endpoint["name"]}"\n',
+        f'model = "{_toml_safe(selected_model)}"\n',
+        f'model_provider = "{_toml_safe(endpoint["name"])}"\n',
         f'model_catalog_json = "{mc_path}"\n',
         f'\n[model_providers."{endpoint["name"]}"]\n',
-        f'name = "{endpoint["name"]}"\n',
+        f'name = "{_toml_safe(endpoint["name"])}"\n',
         f'base_url = "http://127.0.0.1:8080"\n',
-        f'experimental_bearer_token = "{endpoint["api_key"]}"\n',
+        f'experimental_bearer_token = "{_toml_safe(endpoint["api_key"])}"\n',
         f'\n[profiles."{endpoint["name"]}"]\n',
-        f'model_provider = "{endpoint["name"]}"\n',
-        f'model = "{selected_model}"\n',
+        f'model_provider = "{_toml_safe(endpoint["name"])}"\n',
+        f'model = "{_toml_safe(selected_model)}"\n',
         f'model_catalog_json = "{mc_path}"\n',
         f'service_tier = "fast"\n',
         f'approvals_reviewer = "user"\n',