Unable to enable <extractthumb>

Hi,

Still no change. I can not get true to work or stick.

Video files still just show the default no thumbnail image.

I go through settings and toggle “Extract Thumbnails and video information” and still no change in behaviour or in guisettings. I Toggle on and off doesn’t change anything. In fact the lines

    <extractchapterthumbs default="true">true</extractchapterthumbs>          
    <extractflags default="true">true</extractflags>                          
    <extractthumb default="true">false</extractthumb> 

Do not change no matter what I do.