I believe the two errors have been fixed.
One was caused by me "exporting" 1 less row of data from the grid than actually existed, but only in the 2da native format; the XML exporter was OK, thus easy to find.
The other was caused by a quirk in the M$ grid that I have worked around. That grid is such a pain that M$ is releasing a new version!
The download site now contains the updated code, though the release version remains the same because of the way the version-generating code from M$ works (go figure!)
To paraphrase Mr. Gates on the subject of why viruses make Windows more secure....
"My code is better because you're finding bugs in it."