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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> I am trying to transfer the output of pw.x into the input of gw. When running pw2bgw.x, the error comes, ‘cannot find 'charge-density.xml in prefix.save' ‘. Can you please tell me how to generate or find the file ‘charge-density.xml’ to make the running of pw2bgw.x correct? Thanks a lot!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Zhiyao Zhu,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Mathematics department from Fudan University<o:p></o:p></span></p></div></body></html>