Hi All. Please be patient with this newbie. 🙂 I am in the process of converting over from Apple Photos. I've had enough of their file management chaos. As a result of the challenges, I have a TON of duplicates to get rid of. I downloaded a plug-in to do this. Directions say to click on File, Plug-In Manager. I must be blind because I can't find the plug-in manager anywhere. I have lightroom v3.4 installed locally on my Mac. What am I missing?