Hi, I work with XAMPP every day and I know what is happening, you need to change the privileges to the folder which contain the files, in this case is "htdocs". If you don't know how to do it, I'll be very happy to help you with that.I hope we could work together in your project. Anyway, have a nice day.
By the way, if that's not the problem I'll look for it, and fix it for you.