[DuckieTigger]

In your ntpdate.sh, after moving the logfile to /mnt/us/documents/ntpdate.txt, why not opening that file so you can look at it? Like this (in red) in ntpdate.sh:

****snipsnip****

if [ x$RPT == 'xtrue' ]
then
  mv $LOG /mnt/us/documents/ntpdate.txt
  dbus-send --system /default com.lab126.powerd.resuming int32:1
  lipc-set-prop com.lab126.appmgrd start \
    app://com.lab126.booklet.reader/mnt/us/documents/ntpdate.txt
else
  rm $LOG
fi

exit 0

Just tested it and it works - it will open up the logfile to look at it. Another idea to improve might be to have the logfile NOT in /mnt/us/documents, so that the indexer does not have to worry about it. Maybe have it in /mnt/us/opt/log/ntpdate.txt and add a KUAL button to:

lipc-set-prop com.lab126.appmgrd start app://com.lab126.booklet.reader/mnt/us/opt/log/ntpdate.txt

(not sure if that works in the menu.json directly, or if you have to wrap it around another shell script)

This works fine by editing menu.json to:

{
    "items": [
        {
        "name": "Helper",
        "priority": 0,
        "items": [
            {"name": "Set DateTime from Server", "priority": 1, "action": "bin/ntpdate.sh"},
            {"name": "Show DateTime log", "priority":1, "action": "lipc-set-prop com.lab126.appmgrd start app://com.lab126.booklet.reader/mnt/us/documents/ntpdate.txt"}
        ]
        }
    ]
}

(might need to consider to move it to different folder then, better a subfolder, as the reader creates ntpdate.sdr subfolder.)