after careful checking we still cannot run trac-all -qa or dwri-motion as the command always returns: could not open bvals but the same file is flawlessy opened/retrieved in version 5.2.

[cat bvals is fine, trac-all -prep in 5.2. runs fine, trac-all -prep in 5.3 returns could not open bvals]

Kind regards

Gerit Pfuhl