Hi, I just downloaded CC4 and, unlike CC3, the UI elements are huge and fill up my entire 2560x1600 display.
Is there a way to make the elements smaller?

Hi, if you go into your display settings (right click on your desktop background) you can reduce the display size under 'Scale and Layout'. I reduced mine to 175% which fixed the issue.

The Content window seems to be the problem for iClone and CC4. The Scene window is a problem for iClone but not CC4. You can't resize it. I had to close the windows after loading content. I also moved the Modify window to the left side to get more space. 
Keeping the windows display settings scale at a small setting 100% or 125% is better, as is having a high monitor resolution.

'and not being able to get to the 'export button' in certain scenarios is inexcusable.
That, plus not being able to resize dialogue boxes.