diff --git a/src/scripts/monitors/alsa.lua b/src/scripts/monitors/alsa.lua
index be4648ef..8d297c19 100644
--- a/src/scripts/monitors/alsa.lua
+++ b/src/scripts/monitors/alsa.lua
@@ -177,9 +177,13 @@ end
 
 function createDevice(parent, id, factory, properties)
   local device = SpaDevice(factory, properties)
-  device:connect("create-object", createNode)
-  device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
-  parent:store_managed_object(id, device)
+  if device then
+    device:connect("create-object", createNode)
+    device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
+    parent:store_managed_object(id, device)
+  else
+    Log.warning ("Failed to create '" .. factory .. "' device")
+  end
 end
 
 function prepareDevice(parent, id, type, factory, properties)
diff --git a/src/scripts/monitors/bluez.lua b/src/scripts/monitors/bluez.lua
index 172e013d..4a54a7b2 100644
--- a/src/scripts/monitors/bluez.lua
+++ b/src/scripts/monitors/bluez.lua
@@ -109,8 +109,13 @@ function createDevice(parent, id, type, factory, properties)
 
     -- create the device
     device = SpaDevice(factory, properties)
-    device:connect("create-object", createNode)
-    parent:store_managed_object(id, device)
+    if device then
+      device:connect("create-object", createNode)
+      parent:store_managed_object(id, device)
+    else
+      Log.warning ("Failed to create '" .. factory .. "' device")
+      return
+    end
   end
 
   Log.info(parent, string.format("%d, %s (%s): %s",
diff --git a/src/scripts/monitors/libcamera.lua b/src/scripts/monitors/libcamera.lua
index e6e3ed95..27c74597 100644
--- a/src/scripts/monitors/libcamera.lua
+++ b/src/scripts/monitors/libcamera.lua
@@ -125,9 +125,13 @@ function createDevice(parent, id, type, factory, properties)
 
   -- create the device
   local device = SpaDevice(factory, properties)
-  device:connect("create-object", createNode)
-  device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
-  parent:store_managed_object(id, device)
+  if device then
+    device:connect("create-object", createNode)
+    device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
+    parent:store_managed_object(id, device)
+  else
+    Log.warning ("Failed to create '" .. factory .. "' device")
+  end
 end
 
 monitor = SpaDevice("api.libcamera.enum.manager", config.properties or {})
diff --git a/src/scripts/monitors/v4l2.lua b/src/scripts/monitors/v4l2.lua
index fd9a20db..102eb810 100644
--- a/src/scripts/monitors/v4l2.lua
+++ b/src/scripts/monitors/v4l2.lua
@@ -125,9 +125,13 @@ function createDevice(parent, id, type, factory, properties)
 
   -- create the device
   local device = SpaDevice(factory, properties)
-  device:connect("create-object", createNode)
-  device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
-  parent:store_managed_object(id, device)
+  if device then
+    device:connect("create-object", createNode)
+    device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
+    parent:store_managed_object(id, device)
+  else
+    Log.warning ("Failed to create '" .. factory .. "' device")
+  end
 end
 
 monitor = SpaDevice("api.v4l2.enum.udev", config.properties or {})