<div dir="ltr"><p class="MsoNormal" style="margin:0cm 0cm 10pt;line-height:16.8667px;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:13pt;line-height:19.9333px;font-family:Garamond,serif">Dear all,</span></p><p class="MsoNormal" style="margin:0cm 0cm 10pt;line-height:16.8667px;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:13pt;line-height:19.9333px;font-family:Garamond,serif">I am running optimization of the Fe-Si structure under a cubic symmetry.</span></p><p class="MsoNormal" style="margin:0cm 0cm 10pt;line-height:16.8667px;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:13pt;line-height:19.9333px;font-family:Garamond,serif">After performing volume cell optimization I tried to calculated the electronic properties especially the band structure. Unfortunately I have got the following error message:</span></p><p class="gmail-m_-7523426529218700741m_5817960867557621928gmail-m-2648108097584218889gmail-preformattedtext" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10pt;font-family:"Liberation Mono",serif">ERROR: incorrect classes</span></p><p class="gmail-m_-7523426529218700741m_5817960867557621928gmail-m-2648108097584218889gmail-preformattedtext" style="margin:0cm 0cm 14.15pt;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10pt;font-family:"Liberation Mono",serif">0.4u 0.0s 0:00.47 100.0% 0+0k 0+408io 0pf+0w</span></p><p class="MsoNormal" style="margin:0cm 0cm 10pt;line-height:16.8667px;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:13pt;line-height:19.9333px;font-family:Garamond,serif">Please note that I have not included the magnetic properties of Fe in my calculation.</span></p><p class="MsoNormal" style="margin:0cm 0cm 10pt;line-height:16.8667px;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:13pt;line-height:19.9333px;font-family:Garamond,serif">Thank you for your help</span></p></div>