manage.py loaddata stopped working on Django 1.6b2

[static]

Hello,

I have a script for loading fixtures that always worked in Django and it suddenly stopped working on Django 1.6b2. It works on 1.5.1, 1.5.2 and 1.6b1.

### Create an app called appname and a folder called fixtures with a file groups.yaml like this:

• fields:

name: Group1
permissions: []

model: auth.group
pk: 1

• fields:

name: Group2
permissions: []

model: auth.group
pk: 2

• fields:

name: Group3
permissions: []

model: auth.group
pk: 3

### Try run on terminal
python manage.py loaddata appname/fixtures/groups.yaml

### Output for Django 1.6b2
.../local/lib/python2.7/site-packages/django/core/management/commands/loaddata.py:218: UserWarning: No fixture named 'appname/fixtures/groups' found.

warnings.warn("No fixture named '%s' found." % fixture_name)

Installed 0 object(s) from 0 fixture(s)

(test was made using PostgreSQL with psycopg2 2.5.1 - I didn't had time to test on other dbs)