WLSTException: Error occured while performing save : Cannot call Edit functions when you are not in the Edit tree

I'm getting the following message for my weblogic script .... what to do next?

Create mbean Properties with name user
INFO: Saving domain
Problem invoking WLST - Traceback (innermost last):
File "/installables/met10.3/met/wdm/1_02/bin/configure_domain_9.py", line 81, in ?
File "", line 405, in save
File "", line 1744, in raiseWLSTException
WLSTException: Error occured while performing save : Cannot call Edit functions when you are not in the Edit tree.

Try wrapping your work in a session like this....

edit()
startEdit(-1,-1,'false')
..
...
..
save()
activate()