Yes. The iPhoto Library Upgrader 1.1 says that it isn't needed.
The library was on an external hard drive (I made two copies before I shut down my old mac onto the hard drive). I have a second old mac that I've been using to test things out with.
The contents are definitely there. The folders take 260GB of space. From the command line, I see lots of files, including those you pointed out in your earlier post.
If I run iPhoto 9.5.1 (the one from the app store that mavericks installed) on this library, it shows up as having 0 pictures. If I re-run iPhoto '08 (I know my earlier post said '09) 7.1.5 after that, all the pictures are gone. If I rebuild the library, as discussed on this thread, then all the photos come back.
If I use iPhoto Library Manager (3rd part) to create a library that has only 10 or so photos from two events in it (nice bit of code), then even that tiny library shows up empty in the maverick's iPhoto (and if I try to re-read the library after, iPhoto '08 fails).
I have way too many events to go back and hand correct them, so I want to preserve them, the edits and the metadata from the old iphoto. I'm looking for the full deal, not some hack that looses data.... I have come up with plenty of those before I turned here, and they are all unsatisfying...
My next plan is to get an iPhoto 8.x package somehow (not sure how short of buying one online), install it, and see if I can use that to convert the whole library to the 8.x format, then try to jump to 9.x from there... That seems to be the only way to preserve the data, but I'm sure there will be bumps along the way...