Error Message "file can't be found"

Hello m_at_attention2,

A great way to isolate the behavior you're seeing is by testing to see if you receive the same error accessing these files in a different user.

If needed, Add a user or group on Mac will walk you through creating a new user on your Mac.

"Add a user

1. On your Mac, choose Apple menu  > System Settings, then click Users & Groups  in the sidebar. (You may need to scroll down.)
2. Click the Add Account button below the list of users on the right (you may be asked to enter your password.)
3. Click the New Account pop-up menu, then choose Administrator as the type of user.
4. For more information about the options for each type of user, click the Help button in the lower-left corner of the dialog.
5. Enter a full name for the new user. An account name is generated automatically. To use a different account name, enter it now—you can’t change it later.
6. Enter a password for the user, then enter it again to verify. Enter a password hint to help the user remember their password.
7. Click Create User."

You'll also need to share access of the files you're experiencing issues with opening with the new user you created. Check out Share files with others who use your Mac for those steps.

If you continue to experience issues, let us know if the files giving this error are syncing from a third party cloud service. We'll use this information to determine next steps.

Regards.