I am attempting to import my iPhoto library through the "Import from iPhoto Library" plug-in. I am using a MacBook Pro on OS X 10.10.2, the 2015 version of Lightroom (through Creative Cloud), and have version 9.6.1 of iPhoto.
I have attempted re-naming the Presets folder as suggested by some other posts, and also uninstalling and reinstalling Lightroom. Each time, I receive the error message:
An internal error has occurred.
?:0: attempt to index a nil value
I am getting exactly the same problem.
Any update on a solution?
I used another post here, because I had trouble with the plug-in also (it reported 40GB free space instead of 140 and thus refused to import the 80GB library).
To export, I marked all events, exported from iPhoto as Current version (so I keep the edited photos).
I will also export as original file so that I can re-edit later.