Updated Image Garden software and encountering problems

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Hi! 

I have a Canon Pixma MG5520 Wireless and purchased it about 5 years ago. I recently updated my Image Garden software and now when I try to scan and save documents as I used to do they don't show up on Image Garden. I get a message that says something like "you cannot open that file because you do not have permission."

Also, I cannot find any of my old files, particularly the PDF docs I had saved.  

So, 1) How can I get my scanner working and saving so I can access my documents again?

and, 2) Where are my old files?

Thanks for any help you can give!!!