Installe dthe package fine. When I insert a macro to the page, it lest me pick the media and set the size fine. I can save and Preview and it shows the file.

So far all good.

But then the orange box that says this is scripted content and so only appears at runtime disappears, and on my real site not the preview I just get

Then when I go back to the page in the cms there is simply white space.

Switching on Trace, and the page is complaining about master template is the same as the current template, which has only started happening since I installed the package