I am considering using SAGE for instruction in the classroom for come
courses. However, I use an OS 10.5 Intel Mac for preparing materials
and want to have a local installation of SAGE to work on worksheets
for class and to have as backup in case the server is ever down or I
have limited network access in class.
However, I downloaded and installed SAGE 3.2.3 as instructed and
followed the previous posts on this forum regarding a common runtime
error: "Unable to start maxima". Has anyone resolved this issue? I
also have attempted moving the sage folder to my own directory, and
restarting, but this does not resolve the problem. Is this a
permissions issue, or something else?
For reference, I am able to start the GUI via the command notebook()
from the sage command line successfully, but no computation is
successful as the engine cannot be started and returns the runtime
error. I have also tried running as sudo to no avail.
The complete error is included here:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/rangel/.sage/sage_notebook/worksheets/admin/3/code/
1.py", line 6, in <module>
sin(pi)
File "/Applications/sage/local/lib/python2.5/site-packages/
SQLAlchemy-0.4.6-py2.5.egg/", line 1, in <module>
File "sage_object.pyx", line 92, in
sage.structure.sage_object.SageObject.__repr__ (sage/structure/
sage_object.c:1082)
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 6291, in _repr_
return self.simplify()._repr_(simplify=False)
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 3425, in simplify
S = evaled_symbolic_expression_from_maxima_string
(self._maxima_init_())
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 9072, in
evaled_symbolic_expression_from_maxima_string
return symbolic_expression_from_maxima_string(maxima.eval(x))
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
interfaces/expect.py", line 937, in eval
return '\n'.join([self._eval_line(L, **kwds) for L in code.split
('\n') if L != ''])
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
interfaces/maxima.py", line 580, in _eval_line
self._sendline(line)
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
interfaces/maxima.py", line 471, in _sendline
self._sendstr(str)
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
interfaces/expect.py", line 834, in _sendstr
self._start()
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
interfaces/maxima.py", line 450, in _start
Expect._start(self)
File "/Applications/sage/local/lib/python2.5/site-packages/sage/
interfaces/expect.py", line 470, in _start
raise RuntimeError, "Unable to start %s"%self.__name
RuntimeError: Unable to start maxima
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