<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear QE Developers,<div class=""><br class=""></div><div class="">While using the electric enthalpy functional (QE v7.1 + small typo fix of ~2 months ago) of a supercell with a single k point (1 1 1 0 0 0; automatic - Gamma trick not implemented for a general cell), the routine crashes while computing the third direction of the electronic polarisation. </div><div class=""><br class=""></div><div class="">There is not much about how to solve this error, and from what I understood it appears when specifying wrong `nppstr` and k points, along with the `gdir` input.</div><div class=""><br class=""></div><div class="">Since I am using the cartesian coordinates implementation (i.e. automatic grid) + only 1 k point, it is rather unrealistic something is wrong in the input file. Moreover, as written above, the polarisation components along “x” and “y” are computed correctly. </div><div class=""><br class=""></div><div class="">Please, find attached a tarball with I/O. The electric field SCF with E=(0,0,0) was restarted from a previous ground-state SCF.</div><div class=""><br class=""></div><div class="">Thanks a lot in advance to any suggestion.</div><div class=""><br class=""></div><div class="">Kind regards,</div><div class="">Lorenzo</div><div class=""><br class=""></div><div class=""></div></body></html>