I'm new to WordPress and am currently trying to convert my own website http://www.newforestwalker.co.uk to a WordPress site as preparation for using WordPress as a tool for some of my customers. The WordPress site in development is at http://www.newforestwalker.co.uk/wp using a custom theme (still under development).
I want to use thumbnails on my frontpage for the list of posts and have added it using the add_theme_support('post-thumbnails') command in a functions.php file. This, as expected, gave me a Set Feature Image option in the Edit Post area of the Dashboard. However, in finding out how to do this, I see that other people, once having added a featured image, see the image in the Dashboard and also a Remove Featured Image option.
I don't see either the image or the Remove option in the Dashboard and, if you look at the home page http://www.newforestwalker.co.uk/wp, you'll see that the first post actually has two thumbnails, one visible, one not there but the holder is, where I tried to change the image to a different path and found I had to re-add it.
Is there another command that I need to add to the functions.php to achieve full functionality? I've searched the forum and looked at the Codex and can't find that anyone else has encountered this problem, so I must be missing something very simple.
Any help greatly appreciated!