Thanks very much for making Ox free for academic use. I'm working with Gauss code from Ng and Perron and unless I'm missing something, I have encountered a bug in the current 64-bit Ox Console (version 7.03 rpm for Linux). The line tau=zeros(kmax+1,1); in the Gauss source is provoking this error message from oxl: mic1.g (159): 'gauss::zeros' wrong number of arguments The same source is processed without complaint by oxl from the 64-bit rpm of Ox Console 6.21. I'm attaching verbose output from both versions. The command line in each case is oxl -g -v2 <gauss-program>. -- Allin Cottrell Department of Economics Wake Forest University, NC