objective c - NSPageController not allowed, but settings are set to OS X 10.8 -

objective c - NSPageController not allowed, but settings are set to OS X 10.8 -

i using nspagecontroller in app, in targets -> summary, deployment target set 10.8.

in targets -> info, minimum scheme version ${macosx_deployment_target}

in targets -> build settings, os x deployment target set os x 10.8.

in projects -> info, os x deployment target set 10.8.

in projects -> build settings, base of operations sdk set "latest os x (os x 10.8)". compiller apple llvm compiler 4.2. , os x deployment target says os x 10.8.

however, after doing of this, when seek build "class unavailable: nspagecontroller on os x versions prior 10.8"

any ideas. tried cleaning. on os x 10.8.2, latest stable version of xcode.

one more place check deployment version of nib file. has tripped me few times.

objective-c xcode compiler-construction