It is most likely a permission problem. I don't know the instructions for XP anymore but if you are using Vista go to C:/Program Files/Continuum or the folder where you have Continuum installed. Right Click on Continuum.exe and select properties. You should now be at the properties box. Go to the security tab and hit the "Edit.." button to change the permissions. From there give full control to Administrators and Users. -CRe>