Dear all,<br><br> I have noticed that new pre-release 4.0CVS version has an option to optimize cell parameters using BFGS method. However, when using this option, the computation often fails with message "from checkallsym : not orthogonal operation". I'm probably wrong, but I thought that BFGS should not break the symmetry. Is it correct?<br>
<br>Regards,<br> JK<br> <br clear="all"><br>-- <br>===================================== <br>Jess Kondor<br><br>PICYT, Av. Venustiano Carranza 2425-A, San Luis Potosí 78210, México<br><br>=====================================