Apache Log File Error

[makitso]

Warning in Apache log file:

[Sat May 02 08:28:18.103577 2015] [:error] [pid 20501] [client 192.168.1.200:35387] PHP Warning:  Invalid argument supplied for foreach() in /home/rob/www/administrator/components/com_jdownloads/tables/download.php on line 84, referer: http://192.168.1.200/index.php/en/add-ons

The context is that I am changing the description of an existing download item.  The error is generated when I select the save.  User is part of the Registered group.

Joomla version 3.4.1
jDownloads Version 3.2.31