The same thing happens on all three blur gallery effects (field blur, iris blur, tilt shift). Once I pick the filter the layer becomes empty. The strange thing is that when I manipulate any of the controls the object appears, but once I stop holding the mousebutton down on the input. The object disappears again. When i apply the settings (enter or the ok buttoon). The layer is empty. WTF?!?
I have used these filters a lot, this just happend suddenly. And I can't fix it. Restart does not help.
Adobe Photoshop CS6 running on MacBook Pro 2.3 GHz i7, osx 10.8.3.
The preview isn't drawing correctly - which is usually the result of a bug in the video card driver.
And have you installed all the Photoshop updates?