Octave 符号包和倍频程仅适用于超简单任务。我做错什么了吗？

我已安装（在Windows计算机（Win7 64位）上）：

• python 3.5.0和sympy 0.7.6.1
• 倍频程4.0.0.0和符号2.2.2

这是当我尝试与多个操作员进行任何操作时得到的结果：

>> pkg load symbolic
>> syms x
OctSymPy v2.2.2: this is free software without warranty, see source.
Initializing communication with SymPy using a popen2() pipe.
Detected Windows: using "winwrapy.bat" to workaround Octave bug #43036
Some output from the Python subprocess (pid 28092) might appear next.

OctSymPy: Communication established.  SymPy v0.7.6.1.
Python 3.5.0 (v3.5.0:374f501f4567, Sep 13 2015, 02:16:59) [MSC v.1900 32 bit (Int
el)]
>> x^2
ans = (sym)

   2
  x
>> x^2 + 2*x + 1
PYTHON: Error in var export
Resetting the octsympy communication mechanism
Closing the Python pipe...
error: python_cmd: unexpected return
error: called from
    python_cmd at line 143 column 6
    mtimes at line 42 column 5
>>

---

出了什么问题？

当前版本是否仍有问题？这个例子对我来说适用于一台八度4.2.1和符号2.5.0的Mac电脑。