Can not open a file
Macbook Pro Sierra 10.13.1
Trying to open a spreadsheet file for numbers. It says "can't be opened right now". Then it gives me the option to restore it from an older version. Well, there is no older version.
Here is what happened
I closed the file and chose not to save it but instead I said to revert changes. At that point it had a hickup.
Numbers version 4.3.1
MacBook Pro (13-inch, 2017, 2 TBT3), macOS High Sierra (10.13.1)