Trying to help out a hapless student here… and for my own knowledge…
As far as I can tell, there is no autosave or version created if the person hasn’t saved the file at least once (given it a name)… is that right? As usual, he didn’t save his work for like a half a day and battery went out… Couldn’t find any trace of a file…
I believe you are right. It will not even give me the little drop down from Untitled.3dm until it is at least saved once. This is not something I have researched only my testing here a few minutes ago.
Yes, the unsaved file is getting autosaved by OS X. Rhino had a bug that would detect that an unsaved document existed, but it did not correctly recover this file. This will be fixed in the next WIP release.
In the mean time, try this. Look in [student’s home directory]/Library/Autosave Information. There should be one or more “Unsaved Rhinoceros Document” files, perhaps with a number suffix. Copy the newest one of these to the desktop and give it a 3dm extension. Try opening that file.
right, if you don’t save when asked if you want to, the autosave version deletes… (you’ve told macOS you no longer want the file)
but if you crash, the autoSave version will remain in that location and you’ll be asked if you’d like to recover it upon relaunching… if you choose No then it deletes. (since again, you’ve told it you no longer want the file)
here’s how an unsaved .3dm works upon a Rhino crash:
(maybe view it on youtube if it’s not big enough here)