Dear Prof. Blaha,<br><br>I have encountered a problem while plotting the band structure with spin-orbital coupling <br>with command &quot;x spaghetti -p -so&quot;.<br><br>The error message is:<br>-------------------------------------------------------------------------------------------------------------------------------<br>
 number of k-points read in case.vector=         401<br>forrtl: severe (174): SIGSEGV, segmentation fault occurred<br>Image              PC                Routine            Line        Source             <br>libpthread.so.0    0000003E5DC0C4F0  Unknown               Unknown  Unknown<br>
libc.so.6          0000003E5D572200  Unknown               Unknown  Unknown<br>spaghetti          00000000004A6E26  Unknown               Unknown  Unknown<br>spaghetti          000000000044CCE4  Unknown               Unknown  Unknown<br>
spaghetti          00000000004156D2  MAIN__                    184  spag.f<br>spaghetti          0000000000402FDC  Unknown               Unknown  Unknown<br>libc.so.6          0000003E5D51C3FB  Unknown               Unknown  Unknown<br>
spaghetti          0000000000402F0A  Unknown               Unknown  Unknown<br>0.639u 0.135s 0:00.80 95.0%    0+0k 0+0io 0pf+0w<br>error: command   /work/yhzhao/testwien2k10/spaghetti spaghetti.def   failed<br>--------------------------------------------------------------------------------------------------------------------------------<br>
<br>Additionally, there is only three lines in file &#39;case.outputsp&#39; which says:<br>--------------------------------------------------------------------------------------------------------------------------------<br>

### 2010-09-08  06:16:58<br><br> parameter nevl increased:        2000<br>--------------------------------------------------------------------------------------------------------------------------------<br><br>I don&#39;t know what is the problem. Can you help me? Thank you very much.<br>
<br>Regards,<br><br>Yonghong<br>
<br>