Disappearing Plugins inside widgets on Wordpress installation.

After adding a widget space to Wordpress I found a weird problem where the Widget would at first display correctly .  However when going back into wp-admin and viewing the widget the plugins would have disappeared.  As pictured here.

At this point the widget would still display on the website ok.  However once I saved anything in the widgets then the Plugins would also disappear from the website .  The problem was in the naming convention of my items in the sidebar.   So for example I changed ' formBox' to 'formbox'