diff --git a/mods/CORE/mcl_init/compatibility.lua b/mods/CORE/mcl_init/compatibility.lua
new file mode 100644
index 000000000..6172430c1
--- /dev/null
+++ b/mods/CORE/mcl_init/compatibility.lua
@@ -0,0 +1,3 @@
+function minetest.is_creative_enabled()
+	return false
+end
diff --git a/mods/CORE/mcl_init/init.lua b/mods/CORE/mcl_init/init.lua
index a495935f5..4e5b5b675 100644
--- a/mods/CORE/mcl_init/init.lua
+++ b/mods/CORE/mcl_init/init.lua
@@ -30,3 +30,7 @@ minetest.craftitemdef_default.stack_max = 64
 
 -- Set random seed for all other mods (Remember to make sure no other mod calls this function)
 math.randomseed(os.time())
+
+local modname = minetest.get_current_modname()
+local modpath = minetest.get_modpath(modname)
+dofile(modpath .. "/compatibility.lua")
diff --git a/mods/ENTITIES/mcl_burning/api.lua b/mods/ENTITIES/mcl_burning/api.lua
index 969985205..bfd21acdb 100644
--- a/mods/ENTITIES/mcl_burning/api.lua
+++ b/mods/ENTITIES/mcl_burning/api.lua
@@ -11,6 +11,7 @@ function mcl_burning.is_affected_by_rain(obj)
 end
 
 function mcl_burning.get_collisionbox(obj, smaller, storage)
+	if not storage then return end
 	local cache = storage.collisionbox_cache
 	if cache then
 		local box = cache[smaller and 2 or 1]
@@ -29,6 +30,7 @@ end
 function mcl_burning.get_touching_nodes(obj, nodenames, storage)
 	local pos = obj:get_pos()
 	local minp, maxp = mcl_burning.get_collisionbox(obj, true, storage)
+	if not minp or not maxp then return {} end
 	local nodes = minetest.find_nodes_in_area(vector.add(pos, minp), vector.add(pos, maxp), nodenames)
 	return nodes
 end
diff --git a/mods/ENTITIES/mcl_burning/init.lua b/mods/ENTITIES/mcl_burning/init.lua
index a47824537..2e01411b6 100644
--- a/mods/ENTITIES/mcl_burning/init.lua
+++ b/mods/ENTITIES/mcl_burning/init.lua
@@ -16,7 +16,7 @@ dofile(modpath .. "/api.lua")
 minetest.register_globalstep(function(dtime)
 	for _, player in pairs(get_connected_players()) do
 		local storage = mcl_burning.storage[player]
-		if not mcl_burning.tick(player, dtime, storage) and not mcl_burning.is_affected_by_rain(player) then
+		if not mcl_burning.tick(player, dtime, storage or {}) and not mcl_burning.is_affected_by_rain(player) then
 			local nodes = mcl_burning.get_touching_nodes(player, {"group:puts_out_fire", "group:set_on_fire"}, storage)
 			local burn_time = 0
 
diff --git a/mods/ENVIRONMENT/mcl_moon/init.lua b/mods/ENVIRONMENT/mcl_moon/init.lua
index 200c6ca41..09b080810 100644
--- a/mods/ENVIRONMENT/mcl_moon/init.lua
+++ b/mods/ENVIRONMENT/mcl_moon/init.lua
@@ -53,7 +53,9 @@ minetest.register_globalstep(function(dtime)
 	local moon_arg = {texture = get_moon_texture()}
 	local players = minetest.get_connected_players()
 	for p=1, #players do
-		players[p]:set_moon(moon_arg)
+		if players[p].set_moon then
+			players[p]:set_moon(moon_arg)
+		end
 	end
 end)
 
diff --git a/mods/HELP/mcl_craftguide/init.lua b/mods/HELP/mcl_craftguide/init.lua
index 3bc7b705a..439d80ae9 100644
--- a/mods/HELP/mcl_craftguide/init.lua
+++ b/mods/HELP/mcl_craftguide/init.lua
@@ -1077,10 +1077,10 @@ if progressive_mode then
 			local name   = player:get_player_name()
 			local data   = player_data[name]
 			local inv_items = get_inv_items(player)
-			local diff      = table_diff(inv_items, data.inv_items)
+			local diff      = table_diff(inv_items, data and data.inv_items or {})
 
 			if #diff > 0 then
-				data.inv_items = table_merge(diff, data.inv_items)
+				data.inv_items = table_merge(diff, data and data.inv_items or {})
 			end
 		end
 
diff --git a/mods/MAPGEN/mcl_mapgen_core/init.lua b/mods/MAPGEN/mcl_mapgen_core/init.lua
index 88fa0dabf..4664c0a22 100644
--- a/mods/MAPGEN/mcl_mapgen_core/init.lua
+++ b/mods/MAPGEN/mcl_mapgen_core/init.lua
@@ -1113,7 +1113,7 @@ local function register_mgv6_decorations()
 
 end
 
-local mg_flags = minetest.settings:get_flags("mg_flags")
+local mg_flags = minetest.settings.get_flags and minetest.settings:get_flags("mg_flags") or {}
 
 -- Inform other mods of dungeon setting for MCL2-style dungeons
 mcl_vars.mg_dungeons = mcl_mapgen.dungeons
diff --git a/mods/MISC/mcl_commands/gamemode.lua b/mods/MISC/mcl_commands/gamemode.lua
index bd24a7685..e73591e70 100644
--- a/mods/MISC/mcl_commands/gamemode.lua
+++ b/mods/MISC/mcl_commands/gamemode.lua
@@ -20,6 +20,7 @@ minetest.register_on_shutdown(function()
 end)
 
 local core_is_creative_enabled = minetest.is_creative_enabled
+	or function() return false end
 
 minetest.is_creative_enabled = function(name)
 	local id = player_to_gamemode_id[name]
diff --git a/mods/PLAYER/mcl_anticheat/init.lua b/mods/PLAYER/mcl_anticheat/init.lua
index 25ec3fd48..adaddfcb7 100644
--- a/mods/PLAYER/mcl_anticheat/init.lua
+++ b/mods/PLAYER/mcl_anticheat/init.lua
@@ -45,7 +45,7 @@ local function update_player(player_object)
 
 	local player_data = {
 		pos = pos,
-		velocity = player_object:get_velocity(),
+		velocity = player_object:get_velocity() or player_object:get_player_velocity(),
 		air = air
 	}
 
@@ -92,7 +92,7 @@ local function check_player(name)
 		if not obj_player then
 			kick_player(name, "flights")
 		end
-		local velocity = obj_player:get_velocity()
+		local velocity = obj_player:get_velocity() or obj_player:get_player_velocity()
 		local pos = obj_player:get_pos()
 		local x, y, z = floor(pos.x), floor(pos.y), floor(pos.z)
 		while (     get_node({x = x    , y = y, z = z    }).name == "air"
diff --git a/mods/PLAYER/mcl_player/mod.conf b/mods/PLAYER/mcl_player/mod.conf
index 97ccce8e6..2443524dd 100644
--- a/mods/PLAYER/mcl_player/mod.conf
+++ b/mods/PLAYER/mcl_player/mod.conf
@@ -1,3 +1,4 @@
 name = mcl_player
 author = celeron55
 description = Adds the 3D player model, taken from Minetest Game 0.4.16. 
+depends = mcl_playerinfo