Publish but course doesn't load when you click launch

Hi there,

I made a small edit to one of my courses, I publish and then click 'view project'. The launch page appears, I click launch and a new window opens. However, the course itself does not load, it just has the spinning wheel that shows it is loading, but nothing materialises.

I have used Articulate for a long time and this has never happened to me - maybe it is because I have downloaded it to a new laptop and I do not have some of the usual settings put together.

Any help you can provide is much appreciated. Thanks