diff --git a/NOTES.md b/NOTES.md
index f807621..67a01a5 100644
--- a/NOTES.md
+++ b/NOTES.md
@@ -3,6 +3,7 @@
 ### migration to mt 5.0/5.2
 
 There are the issues Tignasse Verte mentionned: Adding `placer` in `register_functions.lua` 
+(related commit for minenux are commit a996d5ac709446322d6c6261c21e5f0752a6aeeb )
 and replacing the two occourances of `nodeupdate` with `minetest.check_for_falling`.
 
 Other changes are necessary because I changed (and had to change) quite a lot 
diff --git a/mods/adventuretest/register_functions.lua b/mods/adventuretest/register_functions.lua
index a7109ae..c4de963 100644
--- a/mods/adventuretest/register_functions.lua
+++ b/mods/adventuretest/register_functions.lua
@@ -98,7 +98,7 @@ minetest.register_on_dignode(adventuretest_dignode)
 
 local function adventuretest_placenode(pos, node, placer)
   hunger.handle_node_actions(pos,node,placer)
-  if placer:is_player() then
+  if placer and placer:is_player() then
 	  local name = placer:get_player_name()
 	  pd.increment(name,STAT_PLACED,1)
 	  
diff --git a/mods/creative/init.lua b/mods/creative/init.lua
index 8e91b2e..59c62f4 100644
--- a/mods/creative/init.lua
+++ b/mods/creative/init.lua
@@ -144,6 +144,7 @@ if minetest.setting_getbool("creative_mode") then
 	})
 	
 	minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack)
+		minetest.log("warning","[creative] maybe  missing check for player here?")
 		return true
 	end)
 	
diff --git a/mods/hud/itemwheel.lua b/mods/hud/itemwheel.lua
index b4b2a54..94d10d0 100644
--- a/mods/hud/itemwheel.lua
+++ b/mods/hud/itemwheel.lua
@@ -2,8 +2,9 @@ local hb = {}
 local scale = tonumber(core.setting_get("hud_scaling")) or 1
 
 local function update_wheel(player)
+
 	local name = player:get_player_name()
-	if not player or not name then
+	if not player or not name or not player:is_player() then
 		return
 	end
 
@@ -169,6 +170,9 @@ minetest.register_on_joinplayer(function(player)
 end)
 
 local function update_wrapper(a, b, player)
+	if not player or not player:is_player() then
+		return
+	end
 	local name = player:get_player_name()
 	if not name then
 		return