Aperture 2.1.1 and OS X 10.5.5. - Can't create nor update Vaults!

Question

After updating to OS X 10.5.5 and installing the latest RAW file plug-ins update from Apple yesterday, I cannot update my existing Aperture vaults, I get the following error message:
The following error occurred:
Aperture has detected a problem with the vault “Aperture Vault”. You need to remove this vault and create a new one.
I deleted both vaults, created new vault, and when I press Update button, it compares empty vault to my library for some 4-5 minutes (why?! It's just empty vault!) and then Aperture shows the same message:
The following error occurred:
Aperture has detected a problem with the vault “Aperture Vault”. You need to remove this vault and create a new one.
I ran Disk Utility - Repair Disk Permissions - no problems. I installed 10.5.5. combo update over the existing system, restarted, and still I cannot create a new vault. The same error message. Any ideas why?
In Console I see two lines from Aperture:
08.9.17 19:28:52 Aperture[336] .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
08.9.17 19:28:52 Aperture[336] line number: 2
I don't know is it related to this problem or not.

Answer 1

I am having exact same problems. Software update says that I have all the latest updates for system and Aperture (including the latest RAW file plug-ins). I can't update vaults. Every time I try to update, I get the following error message:
The following error occurred:
Aperture has detected a problem with the vault “Aperture Vault”. You need to remove this vault and create a new one.
I have deleted all vaults and tried creating new vaults. Aperture will permit the creation of the vault, but when I attempt to update it for the first time, Aperture works away for a while comparing the 'library' to the empty vault and returns the exact same error message:
The following error occurred:
Aperture has detected a problem with the vault “Aperture Vault”. You need to remove this vault and create a new one.
I rebooted computer and restarted Aperture holding down the option key. I requested that Aperture perform a 'Consistency Check' and when completed, I restarted Aperture the same way so that I could request that Aperture 'Rebuild Now' all projects. Once both activities had finished, I tired again to create a vault and update it and was able to create the vault, but unable to update it. The same message was returned:
The following error occurred:
Aperture has detected a problem with the vault “Aperture Vault”. You need to remove this vault and create a new one.
I did notice a change in Aperture's behavior before and after performing the 'Consistency Check'. Before performing the consistency check, Aperture had stopped giving this message upon quitting:
'Updating information for sharing previews'
After the consistency check, Aperture upon quitting would update information for sharing previews.
Is there a fix for this?