notebooks - How to restore corrupted files?

I have a file that I can't reopen because MMa was "Not Responding" and I had to shut it down.

I found links online to this: http://support.wolfram.com/kb/12423

I executed those two instructions in a new notebook, but no "NotebookRestore dialogue" appeared, whatever that is.

What am I missing here?

Answer

You can try the following, but with a copy of your corrupted file:

Needs["AuthorTools`"] 
NotebookRestore[] 

which opens a new window.

N.B.: works on "10.0.2.0 for Mac OS X x86 (64-bit) (December 4, 2014)"