Thanks for the info.
If you are using Windows 7/8 you may want to avoid installing the Arduino IDE in a Program Files directory as that seems to cause permission problems.
I assume the permissions problems were when you attempted to add files or create folder below the Arduino Ide? Libraries and new hardware definitions are best stored under the documents\arduino folder or whatever you have set your SketchBook folder to be located.
Sorry if you already know this but I think it is useful for others to know.
TimVisual Micro Forum: http://www.visualmicro.com/forums/