Hey there, I'm having the same problem. I have Mountain Lion and Logic Pro 9 and since updating my OS Logic Pro 9 doesn't see a lot of my third party plugins, such as: Massive, FM8, Amplitube 3 and Ampkit - can anyone help with this? I have followed Gary Hieber's comments and I can say that I don't have a components folder in the 'Audio' folder located here: Macintosh HD > Users > yourusername > Library > Audio. I have even tried making a new user account to see if that did anything, or created a components folder, but it didn't. Can anyone help with this? I would be so grateful!