ONLY GOOD ON IPHOTO 9 and above?

I just downloaded the pro version of this with high hopes that it could help me sort through my VAST photo library on iPhoto, however whenever I try to select that library I get a pop up window that states that it is unable to do so since it must be iphoto 1.9 or higher? I am wondering if this is a bust or if there is a way to fix this since all my photos are in the new version of iPhoto?

Wtcrescuer about Duplicate Photos Fixer Pro