Hi, the root files for the systematics, produced according to the description in http://www.slac.stanford.edu/BFROOT/www/Physics/Analysis/AWG/InclusiveSL/islrecoil/systRecipe/Rec.html are in /nfs/babar/recoil/Vub_incl/root/anaQA-r* I had problems in merging and reducing them, so for the time being you have to use the 'chain' option committed by daniele in VirVubFitter rf-042904 (add '1' to the name of the file to be read if it is a chain) The chains are in the above mentioned directories and are called cocChain datChain genChain genbchChain genbnuChain mixChain nreChain Let me know if you have problems (or if you can spend some time in making the reduced root files) ciao ric