Q: My Aperture Library is corrupted

I have a large Aperture Library (430 GB) of which I keep several copies on different drives and Macs. Recently I applied the 'reprocess photos' operation to all my photos in order to take advantage of Apple's latest image processing technology. I had found by applying this to a number of photos (versions actually) that it does make for notable improvements.  Whether this had anything to do with my subsequent issue I do not know. Having done so I made the mistake of updating all my copies similarly! But since then Aperture crashes when it is asked to open any copy of my main Aperture Library.

I have applied all three corrective processes available, namely 'Repair Permissions', 'Repair Database' and 'Rebuild Database' to my Aperture Library, but to no avail. Aperture continues to crash when asked to my working copy or any copy made thereof. My Aperture app is the latest version, 3.5

Should any 'real expert' out there have any constructive suggestion to make as to how to recover from this disastrous situation I should be eternally grateful.