It's weird though, that the file on the backup from last week is more recent that what was saved to the original file on my HD. Somehow it reverted back to a version from longer ago...that's why I was hoping to recover it through Archicad.

Do you know how I would find the file on my backup drive?

Yea, it's really strange.. I ⌘Save all of the time and it's impossible that I would not have saved for that long. I have shut down my computer, restarted and all of that so many times. I backed up last week to my external drive so I'm going to see if...

I only see "Go to Folder"  not "Got to File"  

Thank you for replying, Vinicius- I tried that too but in that folder there is no Application Support Folder- see attached Then I tried what you said- "Go" in the finder top-menu, than "Go to file..." and type "~/library" and hit enter... and nothing...