Notice: Undefined index: sorts in options_form() (line 32 of draggableviews/handlers/draggableviews_handler_fieldapi.in

I have seen this as an issue with Commerce Kickstart products. I believe is was do to mis-configured View.

Need more information, the export of the view or images

Okay, I can confirm this. I am getting this error in my watchdog, but not the screen. This happen when I open the field config and again when I close the config (by either clicking the Apply or Cancel button).

FYI - #2 view is misconfigured. I have created a new issue around this #1915588: Need warning when using Native and are not using 'Draggableviews: Weight' sort

I get the same warning even I have have the 'Draggableviews:weight' sort field enabled.

I also get the same warning, but only on remote server. When I work on localhost everything works just fine. Strange.
Of course 'Draggablevies:weight' is enabled in both cases.
What is more when I click on weight field in sorting section I get other error:
Warning: Invalid argument supplied for foreach() in (here is the views_plugin_display.inc file path ) on line 289
similar to this
http://drupal.org/node/1546202#comment-6699766

EDIT:
It turns out that on remote server I have error_reporting(E_ALL) so I gets Warnings and Notices unlike my local server when error reporting level was higher (only errors).

I am not getting an errors locally, but looking at the code I should get one.

Patch Attached that adds isset() check.

Patch in #7 works for me.

Ran test manually and it passed. Committed