hi niels, 

+verbatim+
toolsvc.mctbfitter                                warning material state with excessive scattering, skipping it
-verbatim-
was shown 76 times for 1582 events in rawtoesd with 17.0.2.9. 
/afs/cern.ch/user/g/gencomm/w0/oda/v36/data11_7tev.00187501.physics_jettauetmiss.merge.raw.v36.recon.task._lb0050._sfo-10._0001.job.tmp.log.1
this is the fourth most frequent warning messages. 
i don't think it is real warning. 
please downgrade the message level to debug. 

thanks in advance, 
susumu 