There appears to be a bug, I fixed it.
Go to the plugin editor in WP, select the Custom Ads Widget from the box top right then when editing the file custom-ads-sidebar.php and find the line which reads:
echo'<input type=”text” name=”‘.$meta_box[‘name’].'” size=”175″ />
‘;
and change it to:
echo'<input type=”text” name=”‘.$meta_box[‘name’].'” value=”‘.$meta_box_value.'” size=”175″ />
‘;
I also commented out the following lines because I do not want a default ad displayed if none is set in the post:
/*
echo “<a href='”;
echo get_option(‘adssidebar_adside_link’);
echo “‘>”;
echo “<img src='”;
echo get_option(‘adssidebar_adside_image’);
echo “‘ “;
echo “width='”;
echo get_option(‘adssidebar_adside_width’);
echo “‘>”;
echo “”;
*/