This might be the source of the problem:
https://docs.djangoproject.com/en/1.5/releases/1.5/#system-version-of-simplejson-no-longer-used
This might be the source of the problem:
https:/ /docs.djangopro ject.com/ en/1.5/ releases/ 1.5/#system- version- of-simplejson- no-longer- used