Hi Jon.
Sorry I forgot this part, under Sharing and Permissions it says I have custom Access. If I double click on the cancelled icon the window says;
You can't use this version of the application Safari with this version of Mac OSX.
You have MacOS X 10.7.5. This application requires Mac OS x 10.8 or later.

I have been putting off upgrading to Mountain Lion, still remembering the mess and software problems I had from Snow Leopard to Lion.

Thank you for your help.