intiter = AddressListPrefPtr->find(AddressListIndex);
- if (intiter->first == AddressListIndex && intiter->second > 0){
+ if (intiter->first == AddressListIndex && intiter->second > 0 && intiter != AddressListPrefPtr->end()){
sliPriority->SetValue(intiter->second);
sliPriority->Enable();