Certain guided programmes in Elements have stopped working.

No. Nothing at all happens. The photograph remains unaltered. The computer seems to think it's "there" because it shows the usual before and after photos (except that they are the same) and asks if I want to save changes (except there aren't any). One of the other guided programmes which doesn't work (the one puts a frame in the picture) gives me the following message.

Thanks very much for this. I think this has pointed me in the right direction because all of the guided programmes which aren't working are ones which import graphics. The guided programmes which alter the original photo work fine. I hadn't thought that through before. I am on a Mac which I don't think has separate drivers. I am using the latest version of MacOS.  I am also confused because this is a new problem - it used to work fine. Now it won't work in either Elements 23 or Elements 25.