image/gravatar image cant be hidden

Got another issue with the new version: although I set the widget to hide images and gravatar images, they are still displayed (see mapsmarker.com widget in sidebar).

One hint: option “hide images” and “hide gravatar” is checked on the widget – if I try to generally check this options via settings and click the save button, the two checkboxes become unchecked again after saving…

Any idea what´s causing this?

http://wordpress.org/extend/plugins/testimonials-widget/