Deleting a user : Table 'telemeta.timeside_results' doesn't exist

On version 1.7.1 : 

```

Request Method: | GET
-- | --
http://127.0.0.1/admin/django/auth/user/2/delete/
1.8.19
ProgrammingError
(1146, "Table 'telemeta.timeside_results' doesn't exist")

```