I purchased PSE 9 and loaded it on 2 of my computers. When I tried to load it on my new laptop, it wouldn't work. It said that I can only load it twice. I bought another copy of PSE 9 today and put the serial number in and it still doesn't work. I need help. Nothing will open. PS I have it installed on an external harddrive and it was having trouble finding it. What should I do?