Solved - I wasnt waiting long enough for it to open. When I clicked on the defragmenter it didnt appear to be processing or opening. As such I went on to the next task, reboot the computer in case there was a problem. THen I tried again after rebooting....and it still looked as though nothing was happening, so again I went on to the next task (opening a browser window and looking for a solution).
I then closed the browser windows and see the defragmenter on the desktop. So I closed the defragmenter and attempted to open it again. This time I left the computer idle. 3 minutes and 50 seconds later defragmenter was open. I am not sure why it took so long to open. I am running a fairly powerful computer (Q6600 Quad Core with 6GB...