StfBuilder crashes on MID FLP

Hi @swenzel,
ok, I think I figured it out.
The readout.exe is compiled with FairMQ v1.4.20 while the DataDistribution part comes with FairMQ v1.4.18. I re-installed DataDistribution with aliBuild (instead of the RPMs) with an updated version of alidist and the issue is gone.
Not sure how to ensure that all of the packages needed by Readout and DataDistribution are in synch though…
This is a problem similar to what I posted here:

Anyways, thanks for the suggestions.
Cheers,
Diego