Hi,
Thanks for the link. I spent my afternoon trying to narrow my observations and find the fastest workaround.
The error appears to be simply due to two modules having an "Overview" dashboard with a button/link to the other module's overview dashboard.
Deleting one of the button and deleting the other module first solves this conundrum.
Moral of the story: unsatisfactory error message from clw
Actually an option -ignore and force delete would be better
Regards,
Fred