diff --git a/lua/zapret-lib.lua b/lua/zapret-lib.lua
index b129161..927d02a 100644
--- a/lua/zapret-lib.lua
+++ b/lua/zapret-lib.lua
@@ -18,9 +18,14 @@ function luaexec(ctx, desync)
 	if not desync.arg.code then
 		error("luaexec: no 'code' parameter")
 	end
-	local fname = desync.func_instance.."_luaexec_code"
+	local fname = desync.func_instance.."_code"
 	if not _G[fname] then
-		_G[fname] = load(desync.arg.code, fname)
+		local err
+		_G[fname], err = load(desync.arg.code, fname)
+		if not _G[fname] then
+			error(err)
+			return
+		end
 	end
 	-- allow dynamic code to access desync
 	_G.desync = desync
diff --git a/nfq2/lua.c b/nfq2/lua.c
index f66ddba..3f12aff 100644
--- a/nfq2/lua.c
+++ b/nfq2/lua.c
@@ -1440,11 +1440,11 @@ void lua_pushf_ctrack(lua_State *L, const t_ctrack *ctrack, const t_ctrack_posit
 {
 	LUA_STACK_GUARD_ENTER(L)
 
-	if (!tpos) tpos = &ctrack->pos;
-
 	lua_pushliteral(L, "track");
 	if (ctrack)
 	{
+		if (!tpos) tpos = &ctrack->pos;
+
 		lua_createtable(L, 0, 9);
 
 		if (ctrack->incoming_ttl)