<div dir="ltr"><div>Dear Prof Blaha,</div><div><br></div><div>Thank you for the reply. I have done the following steps and still the error persists. <br></div><div><br></div><div>x lapw1 -up -p</div><div>x lapw1 -dn -p</div><div>x lapwso -orb -up -p</div><div>Then I have concatenated all the case.outputso_* files (all the 72 case.output files) into a single case.output1 file.</div><div>then performed x lapw2 -so -fermi -up -p<br></div><div>After that I opened xcrysden and clicked Render Fermi surface, but then I get an error</div><div><br></div><div>ERROR:while executing wn_readbands program !!!</div><div><br></div><div>Error message: STOP OPEN FAILED.</div><div><br></div><div>I have tried multiple times but still not able to solve the error. <br></div><div>For
GGA+SOC without U, I have been able to plot the fermi surface, but with
GGA+SOC+U I am having problems. Please provide some suggestions.</div><div><br></div><div>Sincerely,</div><div>Anup Pradhan Sakhya</div></div>