qmake cannot find mkspec even though it is there

Using Qt 5.2.1 on the mac, executing quake on my .pro file without any other args works fine. when I switch to another machine with the same setup, I get this trying to execute quake on my pro file. The directories are all the same and the macx-clang directory is there under /usr/local/Qt5.2.1/5.2.1/clang_64/mkspecs/macx-clang on both machines. /usr/local/Qt5.2.1/5.2.1/clang_64/bin/qmake EM.pro Could not find qmake configuration file macx-clang. Error processing project file: EM.pro I have tried specifying with the -spec argument but nothing helps. Should I just try reinstalling Qt 5.2.1 on the failing machine or what is the process to get it working?