Quote:
Originally Posted by scarlettruin
Thank you for the reply 
I didn't do it via 'add books'. I went to 'create a new library' and used the url of the old library on my dropbox, |
Very bad !
NEVER actually use a "backup" for anything except to create another backup. Since the "cloud" was your only backup you should have made a local copy of that on you fixed machine before ever attempting to actually use either, and only one of, the local copy or the "cloud".
Before you attempt any further recovery, make a backup of the current state of the cloud to give you some ability to return to this state if the recovery attempts make things worse. As you fix things, make new independent backups periodically. You don't want to get 90% back to your desired state and then have the next "fix" step destroy everything.