learning-unlimited/ESP-Website — comment on commit 5e40a31a7502caef1c20235f2eaf94e1e33c368d
File: esp/esp/qsd/seltests.py line 40
By aseering:

Could you try "sudo service memcached restart" or equivalent?

I'm wondering if your cache hasn't somehow acquired a copy of a DataTree node that doesn't really exist, or has cached the state that one of them doesn't exist or some other such weird state.