Undefined symbols (1)


Hello, I am trying out the shinobi GridsGallery playground. I followed the instruction on downloading. After inserting my license key into GridsGalleryApplDelegate.m I get the following error:

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_ShinobiEssentials", referenced from:
      objc-class-ref in GridsGalleryAppDelegate.o
ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)
Ca you please help, thank you. I am using Ver. 2.8.1 with Xcode 6.4


Duplicate of: https://www.shinobicontrols.com/forum/shinobicontrols/2015/9/undefined-symbols