diff -crB avogadro-1.2.0/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c avogadro-1.2.0-fixed/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c

*** avogadro-1.2.0/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c	2016-06-08 11:19:45.000000000 -0300

--- avogadro-1.2.0-fixed/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c	2016-09-13 11:57:50.181291665 -0300

***************

*** 67,79 ****

          }

          case 2 : {

              //o->v = dpolynomial[m+l];

!             char *d = (signbit(m) == 1 ? "-" : "+");

              snprintf(o->name, sizeof(o->name), "%dd%d%s",n,abs(m),d);

              break;

          }

          default : {

              char t = 'f' - 3 + l;

!             char *d = (signbit(m) == 1 ? "-" : "+");

              snprintf(o->name, sizeof(o->name), "%d%c%d%s",n,t,abs(m),d);

          }

      }

--- 67,79 ----

          }

          case 2 : {

              //o->v = dpolynomial[m+l];

!             char *d = (signbit((float) m) == 1 ? "-" : "+");

              snprintf(o->name, sizeof(o->name), "%dd%d%s",n,abs(m),d);

              break;

          }

          default : {

              char t = 'f' - 3 + l;

!             char *d = (signbit((float) m) == 1 ? "-" : "+");

              snprintf(o->name, sizeof(o->name), "%d%c%d%s",n,t,abs(m),d);

          }

      }