Writer crashed during save operation on a medium sized document (15 pages, 150Kb
odt file), resulting in overwriting the orignal file with a zero length file.
Crash recovery saved a copy, but on recover during next startup, the recovered
document was zero length as well. 

i.e. This is really a bug with the crash recovery component, it should have been
capable of saving the in-memory copy of the document even if the save operation
has just destroyed the disk copy.

(As a side note, the crash on save happened after the following series of
events: Save, after successful save, an image was missing from a text frame in
which it was cotained just prior to saving, copy-and-pasted same gif image from
Calc into Writer Document, image was now overlayed on top of the text frame but
not inside it, located text frame component in Navigator, used drop down menu to
delete it, image remained, textframe outline disappeared, pressed Save to save
the corrected doc, Writer crashed)