message: small change groupBBoxes
diff: @@ -384,7 +384,7 @@ namespace ospray {
  }
  if (groupBBoxes && node.hasChild("instanceId")) {
  - groupBBoxes->push_back(std::make_tuple(node.name(), currentInstBBox, xfms.top()));
  + groupBBoxes->push_back(std::make_tuple(node.child("instanceId").valueAs<std::string>(), currentInstBBox, xfms.top()));
  currentInstBBox = empty;
  }
  