On Sep 21, 9:37 pm, Jason Grout <[email protected]> wrote:
> After modifying a file, do:
>
> sage -br
>
> which copies the modified files to the build directory and rebuilds Sage
> and then runs Sage.  To just rebuild, just do "sage -b"
>
I am currently using the Ubuntu 9.04 64-bit binary.  Using ./sage -br
or ./sage -b causes an error and prevents Sage from working
afterward.  Starting Sage normally also no longer works after
rebuilding.
Using ./sage -br ends with this error:

ImportError: libcsage.so: cannot open shared object file: No such file
or directory
Error importing ipy_profile_sage - perhaps you should run %upgrade?
WARNING: Loading of ipy_profile_sage failed.

<ERROR: name 'sage_prompt' is not defined>


Typing %upgrade tells me to delete a hidden file and retry the
command.  Sage still doesn't work after I do.  The same situation
occurred after I reinstalled Sage, ran the program, upgraded, modified
a file, and rebuilt again.  I may just download the source code, make
the modification, and completely build Sage for my system.

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