Hi @mike_f ,
checking the obvious first, did you run conda activate yourenvironmentname before starting python? (EDIT: in a terminal where you did not source /Users/FranzkeMM/root_v6.26.00/bin/thisroot.sh first?)
If you have a source .../thisroot.sh line in your bashrc or .profile you should also remove it.
Cheers,
Enrico