Thank you very much. That did the trick and Agent Ransack executed and the results were copied to the file. However what I would really like to do is make it open the application and show the results listed as if I had run it manually. I changed the parameters to the following:
-d "D:\sites" -f "*.cer;*.aspx;*.exe;*.php" -s
Unfortunately nothing happens apart from Agent Ransack running in the windows task manager.