diff --git a/code_obj.lua b/code_obj.lua
index 8a51832..11f78b2 100644
--- a/code_obj.lua
+++ b/code_obj.lua
@@ -80,6 +80,37 @@ do
   local _class_0
   local _base_0 = {
     is_code = true,
+    __tostring = function(self)
+      if self.__str == nil then
+        local buff, indent = { }, 0
+        local match, gsub, rep
+        do
+          local _obj_0 = string
+          match, gsub, rep = _obj_0.match, _obj_0.gsub, _obj_0.rep
+        end
+        for i, b in ipairs(self.bits) do
+          if type(b) == 'string' then
+            do
+              local spaces = match(b, "\n([ ]*)[^\n]*$")
+              if spaces then
+                indent = #spaces
+              end
+            end
+          else
+            b = tostring(b)
+            if indent > 0 then
+              b = gsub(b, "\n", "\n" .. rep(" ", indent))
+            end
+          end
+          buff[#buff + 1] = b
+        end
+        self.__str = concat(buff, "")
+      end
+      return self.__str
+    end,
+    __len = function(self)
+      return #tostring(self)
+    end,
     dirty = function(self)
       self.__str = nil
       self._trailing_line_len = nil
@@ -185,6 +216,10 @@ do
         end
       end
       return self:dirty()
+    end,
+    parenthesize = function(self)
+      self:prepend("(")
+      return self:append(")")
     end
   }
   _base_0.__index = _base_0
@@ -215,6 +250,8 @@ do
   local _class_0
   local _parent_0 = Code
   local _base_0 = {
+    __tostring = Code.__tostring,
+    __len = Code.__len,
     add_free_vars = function(self, vars)
       if not (#vars > 0) then
         return 
@@ -327,37 +364,6 @@ do
       end
       return statements
     end,
-    __tostring = function(self)
-      if self.__str == nil then
-        local buff, indent = { }, 0
-        local match, gsub, rep
-        do
-          local _obj_0 = string
-          match, gsub, rep = _obj_0.match, _obj_0.gsub, _obj_0.rep
-        end
-        for i, b in ipairs(self.bits) do
-          if type(b) == 'string' then
-            do
-              local spaces = match(b, "\n([ ]*)[^\n]*$")
-              if spaces then
-                indent = #spaces
-              end
-            end
-          else
-            b = tostring(b)
-            if indent > 0 then
-              b = gsub(b, "\n", "\n" .. rep(" ", indent))
-            end
-          end
-          buff[#buff + 1] = b
-        end
-        self.__str = concat(buff, "")
-      end
-      return self.__str
-    end,
-    __len = function(self)
-      return #tostring(self)
-    end,
     make_offset_table = function(self)
       local lua_to_nomsu, nomsu_to_lua = { }, { }
       local walk
@@ -386,12 +392,9 @@ do
       }
     end,
     parenthesize = function(self)
-      if self.is_value then
-        self:prepend("(")
-        return self:append(")")
-      else
-        return error("Cannot parenthesize lua statements")
-      end
+      assert(self.is_value, "Cannot parenthesize lua statements")
+      self:prepend("(")
+      return self:append(")")
     end
   }
   _base_0.__index = _base_0
@@ -439,41 +442,8 @@ do
   local _class_0
   local _parent_0 = Code
   local _base_0 = {
-    __tostring = function(self)
-      if self.__str == nil then
-        local buff, indent = { }, 0
-        local match, gsub, rep
-        do
-          local _obj_0 = string
-          match, gsub, rep = _obj_0.match, _obj_0.gsub, _obj_0.rep
-        end
-        for i, b in ipairs(self.bits) do
-          if type(b) == 'string' then
-            do
-              local spaces = match(b, "\n([ ]*)[^\n]*$")
-              if spaces then
-                indent = #spaces
-              end
-            end
-          else
-            b = tostring(b)
-            if indent > 0 then
-              b = gsub(b, "\n", "\n" .. rep(" ", indent))
-            end
-          end
-          buff[#buff + 1] = b
-        end
-        self.__str = concat(buff, "")
-      end
-      return self.__str
-    end,
-    __len = function(self)
-      return #tostring(self)
-    end,
-    parenthesize = function(self)
-      self:prepend("(")
-      return self:append(")")
-    end
+    __tostring = Code.__tostring,
+    __len = Code.__len
   }
   _base_0.__index = _base_0
   setmetatable(_base_0, _parent_0.__base)
diff --git a/error_handling.lua b/error_handling.lua
index d88cfeb..88ce1a9 100644
--- a/error_handling.lua
+++ b/error_handling.lua
@@ -109,8 +109,6 @@ print_error = function(error_message, start_fn, stop_fn)
           local filename, start, stop = calling_fn.source:match('@([^[]*)%[([0-9]+):([0-9]+)]')
           assert(filename)
           local file = files.read(filename)
-          local err_line = files.get_line(file, calling_fn.currentline)
-          local offending_statement = colored.bright(colored.red(err_line:match("^[ ]*(.*)")))
           if calling_fn.name then
             do
               local tmp = calling_fn.name:match("^A_([a-zA-Z0-9_]*)$")
@@ -125,7 +123,15 @@ print_error = function(error_message, start_fn, stop_fn)
           else
             name = "main chunk"
           end
-          line = colored.yellow(tostring(filename) .. ":" .. tostring(calling_fn.currentline) .. " in " .. tostring(name) .. "\n        " .. tostring(offending_statement))
+          do
+            local err_line = files.get_line(file, calling_fn.currentline)
+            if err_line then
+              local offending_statement = colored.bright(colored.red(err_line:match("^[ ]*(.*)")))
+              line = colored.yellow(tostring(filename) .. ":" .. tostring(calling_fn.currentline) .. " in " .. tostring(name) .. "\n        " .. tostring(offending_statement))
+            else
+              line = colored.yellow(tostring(filename) .. ":" .. tostring(calling_fn.currentline) .. " in " .. tostring(name))
+            end
+          end
         else
           local file
           ok, file = pcall(function()
@@ -188,9 +194,13 @@ print_error = function(error_message, start_fn, stop_fn)
             end
           end
           if file then
-            local err_line = files.get_line(file, line_num)
-            local offending_statement = colored.bright(colored.red(err_line:match("^[ ]*(.*)$")))
-            line = line .. ("\n        " .. offending_statement)
+            do
+              local err_line = files.get_line(file, line_num)
+              if err_line then
+                local offending_statement = colored.bright(colored.red(err_line:match("^[ ]*(.*)$")))
+                line = line .. ("\n        " .. offending_statement)
+              end
+            end
           end
         end
       end
diff --git a/nomsu.lua b/nomsu.lua
index 8918b11..8d591e3 100644
--- a/nomsu.lua
+++ b/nomsu.lua
@@ -268,7 +268,6 @@ run = function()
   end
   if #file_queue == 0 then
     nomsu:run([[#!/usr/bin/env nomsu -V2
-use "core"
 use "lib/consolecolor.nom"
 action [quit, exit]: lua> "os.exit(0)"
 action [help]: