Upload to iTunes error: "app references non-public symbols"

Question

I am trying to upload my app to the iTunes store but I receive the following error,

iTunes store operation failed: The app references non public symbols
in Payload/XXX.app/XXX NSTextSizeMultiplierDocumentOption.

where XXX is my specific app's name.

However, according to the AppKit Framework Reference, the NSTextSizeMultiplierDocumentOption is not deprecated and it is public.

Why am I receiving this error?

Answer 1

I found that since I was using DTCoreText I was able to switch the "NS" to "DT" and it solved all problems.