<html><body><div style="color:#000; background-color:#fff; font-family:bookman old style, new york, times, serif;font-size:14pt">Hi,<br>In trying to get bands data to be used in plotting band for simple graphene unit cell, the out put files for bands.in shows the erro details given below.<br><br> Program POST-PROC v.4.1.2  starts ...<br>     Today is 21Sep2012 at  0:17:35 <br>     file C.pz-rrkjus.UPF: wavefunction(s)  2S renormalized<br><br>     negative rho (up, down):  0.396E-04 0.000E+00<br><br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>     from davcio : error #        10<br>     error while reading from file<br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br><br>     stopping
 ...<br><br>Please I need the possible solution.<br>Thank you<br>Yusuf.<br>Postgraduate Student<br><br><br><div><br></div></div></body></html>