testing problem reported by Jeanne. Article was locked, but it was me.. so I got back in OK. No error messages.
Logged out and logged back in as me -- no problem.
Now I have two separate windows open with same article open in both...
Saved and changed in one window.
Tried to make different changes in first window and got this message:
You are not permitted to use that link to directly access that page (#157).
Those changes were not saved.
Re-opened article and made new changes -- they do get saved.
This is NOT the problem Jeanne was having.