Can Anyone help as this has never happened before. I downloaded the Chaotica free app, as the other one disappeared. Now it cover my entire desktop screen and I don't know how to make it smaller. I know how to change the % size of my art, but this is different. Nothing happens when I press "Esc" which usually reduces a full screen image. I'm stumped. Thanks in advance.

Try resetting the layout.
Window -> Reset Layout

If you can't see the toolbar, while Chaotica is focused, press Alt+W, then press the down arrow on your keyboard three times, then press Enter.

_________________
Find me on: ArtStation // DeviantArt