dyld not loaded Reason: image not found libopencv_core.2.4.dylib

I had the same problem. i keep all .dylib in system root directory usr/lib it working fine. At the run time .o file not get .dylib file path then it gives an error.

I found a better solution: recompiling openCV in Xcode and set the @executable_path/../Frameworks in the build settings, for every .dylib you compile - now the .dylibs themselves always "know where they are".