Currently Being ModeratedMay 27, 2012 12:38 PM (in response to rbrown1973)
Did you install all three files in the correct locations as follows?
/Users/<YourLogin>/Library/Application Support/Aperture/Plug-Ins folder:
Note - the user Library is hidden by default in OS X 10.7.x. If you press and hold the Option key while using the 'Go' menu in OS X menu bar, you will be able to select and navigate to the Library folder in the latter address above.
Unfortunately, with PTLens (or any other plug-in) - Aperture makes a TIFF (or PSD) master file to work on. I don't know of any program or plug-in that doesn't add to the workflow in Aperture for lens correctlion.
FWIW, I use DxO Optics Pro 7.5 for my kit lens, but I output in JPEG format and then import into Aperture. It works well for me, but is not necessarily for everyone.