On my LyX 2.0.4, Windows, export to odt and HTML (Word) is very broken. For example, at times I get this in messages:
23:14:21.748: C:\Users\lunacy\AppData\Local\Temp\lyx_tmpdir.Hp8096\lyx_tmpbuf3>t4ht my-doc.tex "-cooxtpipes -coo" -ewin32/tex4ht.env 23:14:21.751: --- error --- Illegal storage address but then I also get: 23:14:21.772: Successful export to format: odt 23:18:42.401: Automatic save done. Naturally, the export fails, i.e., neither the temp dir nor the actual doc dir contain an exported file.