hi,

the new rtts for the new trackbuilder in release 17 works well if using moore as trackbuilder, but not with muonstandaloneflags.trackbuilder=&quot;muonboy&quot;. we get errors such as

storegatesvc                                      warning retrieve(non-const): no valid proxy for object extrapolatedmuonspectrometertracks  of type trackcollection(clid 117682415) 
 try to use a const datahandle
muoncombinedfit                                     error  failed to retrieve extrapolated trackcollection: extrapolatedmuonspectrometertracks

and the track summary contains 0 tracks.

the log file is available at 
http://atlaspmb.cern.ch/rtt-mon/rttjob.php?nightly=rel_5&amp;build=devval&amp;cache=offline&amp;cmtconfig=x86_64-slc5-gcc43-opt&amp;package=muonrecconfigtests&amp;jobname=bs_tbmuonboy&amp;jobid=bs_tbmuonboy&amp;file=bs_tbmuonboy_log

to reproduce:
athena_pycintex_minvmem=120 reco_trf.py --ignoreerrors=true maxevents=200  amitag=q122 autoconfiguration=everything --athenaopts=--stdcmalloc postinclude=muonrecconfigtests/muonrecconfigtests_postinclude.py inputbsfile=/afs/cern.ch/atlas/project/pmb/data/data11_7tev.00178044.physics_muons.merge.raw._lb0092._sfo-all._0001.1_250evts outputesdfile=myesd.pool.root preexec=muonrecflags.dotrackperformance=true,,rec.dodetailedauditor=true,,muonrecflags.dostandalone=true,,muoncombinedrecflags.docombinedfit=true,,muoncombinedrecflags.dostatisticalcombination=true,,'from muonrecexample.muonstandaloneflags import muonstandaloneflags',,'muonstandaloneflags.trackbuilder=&quot;muonboy&quot;',,'muonstandaloneflags.printsummary=true'
