Occasionally, you may find that mockups in your project get stuck on "generating image". To fix this, all you have to do is make a small change to the mockup, and then save it. This will force our image generator to try again.
We recommend switching the skin for the lowest impact change. This will force all your mockups to be redrawn, and should fix the any image generating issues. You can change it back as soon as everything is fixed!
To switch skins go to the View menu, select the Skin from the dropdown, and set the Skin setting to "Wireframe".
If the spinners remain, even after you have made a change and saved, give us a shout and we will get it fixed!