use @like.target instead of @target, build should be green

app/controllers/likes_controller.rb

@@ -31,7 +31,7 @@ class LikesController < ApplicationController
   end
 
   def destroy
-    if target && @like = Like.where(:id => params[:id], :author_id => current_user.person.id).first
+    if @like = Like.where(:id => params[:id], :author_id => current_user.person.id).first
       current_user.retract(@like)
       respond_to do |format|
         format.all { }

app/views/likes/update.js.erb

-$(".like_action", "#<%=@target.guid%>").first().html("<%= escape_javascript(like_action(@like.target))%>");
-ContentUpdater.addLikesToPost("<%=@like.target.guid%>", "<%= escape_javascript(render("likes/likes_container", :target_id => @like.target_id, :likes_count => @target.reload.likes_count, :target_type => @like.target_type)) %>");
\ No newline at end of file
+$(".like_action", "#<%=@like.target.guid%>").first().html("<%= escape_javascript(like_action(@like.target))%>");
+ContentUpdater.addLikesToPost("<%=@like.target.guid%>", "<%= escape_javascript(render("likes/likes_container", :target_id => @like.target_id, :likes_count => @like.target.reload.likes_count, :target_type => @like.target_type)) %>");
\ No newline at end of file