CvSVM::auto_train seems broken when called with set of selected features (Bug #56)

According to the manual, it should be possible to call CvSVM::auto_train with a set of selected features. When I call the following:

// -- Create set of n selected features (CvMat* row-vector)
const int* ofi = orderedFeats.ptr<int>(0);
for (int i = 0; i < n; i++) sfi[i] = ofi[i];

// -- Train using this subset of features
CvSVM svr0 = CvSVM();
svr0.train_auto(const_cast<const CvMat*> (cvFeatures), const_cast<const CvMat*> (cvLabels), sf, NULL, params, k_fold_train);

I get the following error:

OpenCV Error: Sizes of input arguments do not match (The sample size is different from what has been used for training) in cvPreparePredictData, file /Users/michel/macCode/opencv-2.0/src/ml/ml_inner_functions.cpp, line 1116
terminate called after throwing an instance of 'cv::Exception'
Program received signal: “SIGABRT”.

Is there a chance that feature selection is actually unsupported atm?