I think the Mac and Windows versions are too different for this to be related but who knows? I'm running a test to see if the usual Export includes Titles - the video I created yesterday I tried "Share to VIMEO" and when that failed I exported and uploaded the file, but maybe using the dedicated "Export Movie" will work differently?
well it looks like somehow VE removed all the titles I had added; I closed the program and restarted it, and there are no titles at all in the edit window. So that's why there are none in the export, but why were they removed, I wonder?
I've found that in the RawMovie there is a file titles.jsn it is readable and it contains all the title information. Mine was still ok although the movie wasn't.