I have read previous posts about installing an Edit plug-in in Aperture, but I have tried it and it is not working for me. It is telling me "Plug-In not installed" Any suggestions? This is my first plug-in, so I don't have any examples on my machine that are working.
Which plug-in, and where are you trying to install it?
Is your plug-in compatible with Aperture 3.4? It needs to be an Intel program, 64 bit, and sandboxed. Check the manufacture's site.