Had the same, thanks to your post I was able to solve with changing link ln -hfs /usr/lib/libz.1.dylib /Applications/Splunk/lib/libz.1.dylib ,Had the same issue after upgrade to High Sierra, solved the same as you with ln -hfs /usr/lib/libz.1.dylib /Applications/Splunk/lib/libz.1.dylib and adding OPTIMISTIC_ABOUT_FILE_LOCKING = 1 to config ... View more