When selecting Widget under the wp-image-slideshow page, the Select Gallery Type dropdown variable is “Widget” with an uppercase W, but it sets the value as “widget” with a lowercase w. If you go to edit the image afterwards, it defaults to Group1 since it can’t find “widget” with a lowercase w in the dropdown list.
I manually fixed it by changing the following line in the image-management-edit.php file:
<option value='widget' <?php if($form['wpis_type']=='widget') { echo 'selected' ; } ?>>widget</option>
Great Plugin, but I have seen that other plugins can insert the image url directly to the url field. Hope for this feature next update!
https://www.ads-software.com/extend/plugins/wp-image-slideshow/
]]>