Here is the error:
dyld: Library not loaded: /usr/lib/libz.1.dylib Referenced from: /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit Reason: Incompatible library version: IOKit requires version 1.0.0 or later, but libz.1.dylib provides version 0.0.0
However:
otool -L /usr/lib/libz.1.dylib
returns
/usr/lib/libz.1.dylib: /usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1213.0.0)
What am I missing?