I am adding two UIBarButtonItems to a UINavigationBar. The first of these is a system item – the search button – and works great. The second is a custom image (a small white Glyphish icon), but when I add this the image becomes grey. The button is perfectly clickable, just grey. Does anyone have an idea why this might be happening?

I do believe the alpha levels are correct. If I put the same icon in a UIBarButtonItem on a UIToolbar (rather than a UINavigationBar) this is how it appears:

Then, try cleaning the target.
Shift + cmd + K