My last reply to your comment was premature. Sorry to mislead you.
The scanner did work the first time that I used it, but has not worked since, with the following exceptions.
In the Finder window there is an Application called Image Capture. This will allow your scanner to work and save the image, but is limited to one page at a time. I was wanting to scan a nine page magazine article. The only way to do it was to save nine different files.
The second way to scan a document is to open the MP Navigator Application. At the bottom left corner is an option to "Scan with Scanner Driver." Open that option and in the "Simple Mode" you can scan your document. Then close the window and a "Save to PC" window pops up. This window allows you to save your scan. Once again, only one page at a time can be saved.
Neither is a very handy solution, but do allow the scanner to work.
If anyone has a solution to save multiple scans into one file, please let me know.