by Ken Task.
Thanks. That helps. Here's one discussion and resolution to issue:
https://moodle.org/mod/forum/discuss.php?d=190335
Gist of that one had to do with characters in the file names. Example, never a good idea to name a Word doc/x using a '/' character when one knows they are uploading to a Linux box. Why? A '/' character to linux is a 'path delimiter' ... like Winders '\' [C:\Documents\My Special Docs\].
There could be other reasons as well. Google is your friend ... Moodle.org forums is open to Google ... sooooo ....
'spirit of sharing', Ken