Furthermore I would propose to rename this issue: The problem is not that Py_SetPath cannot be called on pointer returned by Py_GetPath. I think that the problem is more general: Calling Py_SetPath NEVER works.

--> I get the same exception as documented in my initial post when calling Py_SetPyth like this:
   Py_SetPath(L"/usr/labsolution/python32/lib/python3.2/");
or like this:
  wchar_t * path;
  path = malloc(128 * sizeof(wchar_t));
  wcscpy(path,L"/usr/labsolution/python32/lib/python3.2/");
  Py_SetPath(path);