The hard drive is showing up in Aperture's browser but the iPhoto Library does not appear. Any ideas?
What Browser do you mean? Do you mean, you do not see the library in the Import window? Or the Browser to open a library? The Import window will not show libraries, only folders with images.
Are you trying to import the iPhoto library as a library into Aperture, or are trying to import selected image files from the iPhoto library?
What are your iPhoto version and your Aperture version? If you want to import from iPhoto to Aperture in Aperture 3.3 or later, the iPhoto version and Aperture version must match. If you have the current Aperture 3.4.3, your iPhoto version should be 9.4.3. and the iPhoto Library upgraded to 9.4.3. Do you have these versions? Also, your external drive should be formatted Mac OS X extended.
If you have Aperture 3.3 and later, there is no longer an iPhoto Browser to import selected files from iPhoto.
You can open the iPhoto Library in Aperture and work directly with the iPhoto Library, or import the iPhoto library into Aperture as library, not single files.
If you only need a few images from iPhoto and do not want to import the whole library, open your iPhoto Library in Aperture and export the selected images as new Aperture Library, then import this library into Aperture.
Regards
Léonie