I am running on Ubuntu 18.04, actually on a docker container. @manso also confirmed this problem on his system. His logs also shows the errors with $ROOT_DYN_PATH, which has been showing up for a week or so, even when running root:
[O2/latest-dev-o2] ~/simtest $> root -l
Error in <TSystem::ExpandFileName>: input: $ROOT_DYN_PATH/libRIO, output: $ROOT_DYN_PATH/libRIO
Error in <TSystem::ExpandFileName>: input: $ROOT_DYN_PATH/libCling, output: $ROOT_DYN_PATH/libCling
Error in <TSystem::ExpandFileName>: input: $ROOT_DYN_PATH/libMathCore, output: $ROOT_DYN_PATH/libMathCore
root [0]
Looking at the serverlog for o2-sim, I see [FATAL] Inexistant ConfigurableParam key: MFTBase.buildBarrel, while o2-sim-serial runs fine (but, again, it fails to produce digits afterwards) - see logs and outputs here. Thanks.