Greetings.
It looks like the Othernet folks have completely changed the way they deliver APRS messages. Can you email me a few of those individual messages-yyyy-MM-dd_HH_mm.txt files, so I can see how they are structured? The old file format was one large file with a whole series of messages in it. Given the byte counts of these files in your directory listing, it may be only 1 APRS packet per file. Also, are those dates/times in your local timezone, or in UTC? I'm going to have to significantly rewrite the Outernet port driver to handle this major change in file structure.
Andrew, KA2DDO
author of YAAC