Can't save settings file.

I'm trying to save to the settings.xml file in findall, but when I do it says 'Please check whether this file is opened in another program.'. If I create a new settings.xml file and save it to the desktop, make the changes there, then copy that file over to the appropriate addon file, I can make the change. This is not really the best solution. When I want to make repeated changes, this gets rather annoying. Does anyone know why it is saying this and/or how to fix it? Thanks.

I don't know if its the same problem I had it was a permission problem. I had to go into properties in say notepad and change everyone to full control maybe that will work for you? I have no clue why when I am the administrator, but it's whatever lol