---
 src/gfanlib_zfan.cpp |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: gfan0.7/src/gfanlib_zfan.cpp
===================================================================
--- gfan0.7.orig/src/gfanlib_zfan.cpp
+++ gfan0.7/src/gfanlib_zfan.cpp
@@ -37,7 +37,9 @@ namespace gfan
   {
     IntVector indices=getConeIndices(dimension,index,orbit,maximal);
     ZCone ret=this->complex->makeZCone(indices);
-    if(maximal)ret.setMultiplicity(((orbit)?multiplicitiesOrbits:multiplicities)[dimension][index]);
+    const std::vector<std::vector<Integer> >&mult = orbit ? multiplicitiesOrbits : multiplicities;
+    if(maximal && mult.size() > dimension && mult[dimension].size() > index)
+      ret.setMultiplicity(mult[dimension][index]);
     return ret;
   }
   IntVector ZFan::getConeIndices(int dimension, int index, bool orbit, bool maximal)const