Just to be clear, it seems that your "EPICS Frontend" was either not recompiled against the new midas yet or the old binary is being run, but "SC Frontend" is using the new midas.

> > So I started our DAQ with an updated midas, after ca. 6 months+.
> 
> Would be worthwhile mentioning the git commit hash or tag you are using.
> 
> > No issues except all FEs complaining about the Alarm ODB structure.
> > * I adapted to the new structure ( trigger count & trigger count required )
> > * restarted fe's
> > * recompiled
> > 
> > 18:17:40.015 2025/09/30 [EPICS Frontend,INFO] Fixing ODB "/Alarms/Alarms/logger" 
> > struct size mismatch (expected 452, odb size 460)
> > 
> > 18:17:40.009 2025/09/30 [SC Frontend,INFO] Fixing ODB "/Alarms/Alarms/logger" 
> > struct size mismatch (expected 460, odb size 452)
> 
> This seems to be https://daq00.triumf.ca/elog-midas/Midas/2980
> 
> > how do I get the FEs + ODB back in line here?
> 
> Recompile all frontends against new midas.
> 
> Nick.