Recently (last two updates) I have been running into a lot of file corruption problems. I frequently get errors when reverting when closing.
I have uploaded to the support site two files illustrating a problem. The first was on my computer and I had not opened it in six months. When I try to open, Rhino says there is an unreadable geometry object and there is nothing in the file other than block definitions. The second “2” is the same file I copied to another computer. They have the same date and size. That one opens.
Until a pattern for this file corruption can be found and fixed, make sure you’re keeping backup copies on your network drive or in a Time Machine backup.
I’ve heard that Macs seem to have a bit of a problem with not-caring-about-your-data, like if your computer is improperly shut down even 5 minutes after saving a file, it might still be sitting in the RAM cache and not actually saved. I don’t know if these reports are related, but it’s apparently a thing.
I uploaded a large file to the support site that has been giving me nightmares. I have had to restore it from backup (Time Machine) four times now.
This time I made an additional copy.
Opened that file; inserted a few blocks; exploded blocks; deleted some of the surfaces. Then I closed and reverted to the saved version. I got the error I posted previously the first try. Now the file is unreadable.