GalaxyEmperor

Is there any reports on that in Console? Open 'Console' and select 'system.log'. Retry to select Metadata in Aperture and check if something is printed to the console.

It looks like the 'com.cisco.videoguardmonitor' is causing the problem. check here and consider removing the videoguardmonitor. Open the 'Activity Monitor' and enter in the search field something like 'guard' to...

This System Messages are not related to Aperture, but rather to iCloud synching. Have you tried to reboot into Recovery Mode (hold down the keyboard shortcut Command-R while booting) and...

A little more infos could help, on my MBA M1 (MacBook Air) late 2020, it works fine. What is the output in the system log, and do you have a...

Have you entered your PassWord in the System Preferences? Click the Lock button left… 

Do you have the Library on a external disk? What does Disk Utility say about that disk Type?

Always make a copy of your library and use that copy for experiments. Can you give me some mor infos, what machine do you use (e.g. MacBook Air 2020 M1)...

My first thoughts went also to this direction, the Digital Camera RAW files are: /System/Library/CoreServices/CoreTypes.bundle /System/Library/CoreServices/RawCamera.bundle /System/Library/CoreServices/RawCameraSupport.bundle but I didn't check further yet. enjoy

My MacBook Air has a M1 chip and I have Monterey 12.1 Beta installed. With BigSur it works with sporadic crashes. There are several problems. 1. Opening the Library works...