apply columns in all folders and subfolders stops after 2-3 folders

[aostlender]

Hi,
Columnswizard Version 6.1.2 - 7/03/2019
mbox-format
Thundebird 60.9 64 bit, linux

apply columns to folder and its children stops working after 2-3 folders.
AND "forgets" formatting after some time (maybe due to systems crashes).
i am not able to fix this issue myself, but would like to !
If anyone can assist me / support me, i would be happy.
Thanks
Andreas

[cleidigh]

@aostlender
sorry for the slow response
have you tried using v7.0.0?
Christopher