Bugfix that checks if replacer node is really a node

init.lua

@@ -45,6 +45,7 @@ end
 
 paint.replace = function(user, position, replace, replacer, full)
   
+  if not minetest.registered_nodes[replacer] then return end
   if replace == replacer then return end
   if paint.loops > 2000 then return end
   local pos = position
@@ -74,7 +75,6 @@ paint.replace = function(user, position, replace, replacer, full)
       paint.replace(user,p, replace, replacer, full)
     end
   end
-  
   for i=-1,1,2 do
     local p = {x=pos.x, y=pos.y, z=pos.z+i}
     local n = minetest.env:get_node(p).name

readme.txt

@@ -23,6 +23,7 @@ Changelog
 0.3
 * Primary bucket function to only fill the top(visible) nodes
 * Holding shift while using bucket fills nodes that also are not visible
+* Bugfix that checks if replacer node is really a node
 
 0.2
 * Fixed check if pointed thing is a node (bug)