salvaging something from corrupted rtf

Does anyone know how to salvage something from a corrupted rtf?

I restored the incompatible project per instructions (using the simple trick of MM of putting 16 in the .txt file), but the scenes I wrote yesterday, which were up and autosaving during the crash, got corrupted and show only empty boxes when opened with Word, Wordpad, or Notepad (no empty boxes]

I’m sure the data is there – I was assiduous about saving all day. Just don’t know how to find it and will be most grateful to anyone who can help.

JanisB