The ntuple code is supposed to run in CMSSW_5_3_11, instructions are for PSI:
Set up CMSSW (cmsrel command only needed for initial setup):
source $VO_CMS_SW_DIR/cmsset_default.sh cmsrel CMSSW_5_3_11 cd CMSSW_5_3_11/src cmsenv kinit -f $USER@CERN.CH
check out the code from git:
git clone https://github.com/decosa/TopQuarkAnalysis
run the check-out script:
cd TopQuarkAnalysis/SingleTop/ source singleTop_5_3_11.csh