Unity Script Editor Not Working

Hey all
The script editor for Unity isn’t working for me. It came up saying that I was denied access to some kind of file and after that everytime I tried to open it up the dialog box would open but everything would be blank. Has anyone else had this problem?

Uniti’s Monodevelop never opened for me either. I red at several places that new versions have that problem.

I am using UnityDevelop, for java-script and warmly recommend.
You can download it here

You will also need classes for unityDevelop. Last version I have found here