This problem still occurs on my MacBook Pro Retina 13". When ich seth the Macbook Screen resolution to "More space" Cuelux crashes at start up.
The other resolutions work.
But when selecting the 1440x900 Resolution and using Fullscreen mode, die upper button bar disappears.
When using one of the XGA Resolutions and then minimize Cuelux to the commandbar and then bring it back up again, the screen stays white... a restart is then needed