<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:10pt"><div>Dear Developers and Users,</div><div>I am using Wien2k, I got this error <br></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: verdana,helvetica,sans-serif; background-color: transparent; font-style: normal;"><span style="font-weight: bold;">zero vector was submitted for normal, when executing xc_isospacesel <mesaWin> center2D -normal {x y z}......</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: verdana,helvetica,sans-serif; background-color: transparent; font-style: normal;">when I try to calculate density with xcrysden. Can anybody help me to resolve this?</div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: verdana,helvetica,sans-serif; background-color: transparent; font-style: normal;">Lawal<br></div></div></body></html>