XCode's warning you that a class called in other classes can't be found in either your custom classes, or the linked frameworks.
As a rule of thumb, every time you include a custom control or module in your project, double check that all its dependencies are included too.
So, in your case, AMSlideMenuMainViewController
is calling CATransform3DMakeScale
from CoreAnimation's framework (deduced from CA
prefix), which is included in QuartzCore
, but it's not included in your project configuration yet.
One way to fix it is to click on your project file, in the summary tab, and add the QuartzCore framework to the list of framework.
Then, double-check that the header of QuartzCore is imported where you need it.
For you, I guess in AMSlideMenuMainViewController
:
#import <QuartzCore/QuartzCore.h> //At the top of your file
Then, clean and build and it should be fine!