hi mark, 

+verbatim+
py:eflowobjectbuildertoolsgetter_cell_nocal:configure :   error could not import eflowrec.eflowcelllevelsubtractiontool
-verbatim-
blocks muonrecrtt standardrecofromesd with dev rel_5 in 64 bit. 
https://atlasrtt.cern.ch/rtt/rel_5/dev/build/x86_64-slc5-gcc43-opt/offline/muonrecrtt/standardrecofromesd/standardrecofromesd_log

i will try to reproduce the bug. 

cheers, 
susumu (muon software shifter)