Hi Chris, Yes, it works just fine: > > oxl threes > > Ox Console version 6.21 (Linux_64) (C) J.A. Doornik, 1994-2011 > This version may be used for academic research and teaching only > > 3.0000 3.0000 3.0000 > 3.0000 3.0000 3.0000 > 3.0000 3.0000 3.0000 (also installed in a non-standard location, with the obvious change to ox/bin64/oxl for the path) You might try to install strace and check the output of strace -o test.log oxl threes to get more info where things go wrong. CS