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iosswiftcastinglldbbwwalkthrough

Could not cast value of type 'UIViewController'

I am trying to implement BWWalkthrough in my project. However I get an error stating

Unknown class _TtC20BWWalkthroughExample27BWWalkthroughViewController in Interface Builder file.
Could not cast value of type 'UIViewController' (0x195bca580) to 'AppName.BWWalkthroughViewController' (0x10042c3a0).
(lldb)

It is pointing at the below code

let walkthrough = stb.instantiateViewControllerWithIdentifier("walk") as! BWWalkthroughViewController

I don't know why this is happening. Any help would be appreciated.

Also feel free to ask for more code from my project.

Solution

  • Your storyboard doesn't seem to be linked to a BWWalkthroughViewController. Find where the view controller should be a BWWalkthroughViewController, and check if it is one.