Aperture photos won't upgrade
I just had my iMac hard drive replaced, due to a recall. When trying to reinstall my Aperture library from an external hard drive, I get the message they need to upgrade. I am running Aperture 3.2.4, on OS 10.6.8 and every time I have tried to upgrade my photos, the scanning bar continues to move but nothing else happens. This has been allowed to go on for hours but nothing changes. I have reinstalled Aperture a couple of times and nothing seems to help.
I would appreciate any suggestions, hopefully in lay terms.
Thank you.
iMac (21.5-inch Late 2009), Mac OS X (10.6.8)