Thanks for the suggestions.  I checked -- my local copies are all
writeable, and
sage-current-location.txt contains my local path.  As I said in the
previous post, everything works ok in command line.
It's just when I work from the notebook that I get pointed back at the
system files.
Could my ~/.sage directory be saving something that causes this?

Victor

On Aug 4, 2:46 pm, gsw <georgswe...@googlemail.com> wrote:
> Guess 2:
> You need to "run" this new copy of Sage at least once, i.e. type just
> "mysage" to start the Sage interpreter.
> Sage recognizes that "itself" has been moved, and re-generates certain
> hard-linked paths.
> Have a look at (with probably  $SAGE_ROOT == ~/mysage  in your case)
> the contents of the file "$SAGE_ROOT/local/lib/sage-current-
> location.txt" --- it's silently updated by Sage whenever the Sage tree
> is moved/copied.
>
> Guess 3:
> Using "cp -p -R" did copy all the files over, but they still have only
> "Read" permission (for the "user" you are), but still not "Write"
> permission, so you are not allowed to modify them (by a "$SAGE_ROOT/
> sage -ba", say), although all these files are local copies now.
>
> Cheers,
> Georg
>
> P.S.:
> The first thing I do after installing a new Sage tree, is "$SAGE_ROOT/
> sage -clone work", in order to always have the possibility to switch
> back to "vanilla" Sage by "sage -b main", and check the old behaviour.
> You can always switch again to the work branch by "sage -b work".
> Usually I clone more than only one work branch, i.e. "work",
> "workzwo", "test" (for testing/reviewing new patches from trac), ...
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