This happens to me too.
At the beginning I thought it was with es_ES only but then I installed en_UK and it_IT and still the problem persists.
However, after clicking on the error alert, the language seems to load correctly.
This is a Hardy Heron Alpha 4 updated untill yesterday.
This happens to me too.
At the beginning I thought it was with es_ES only but then I installed en_UK and it_IT and still the problem persists.
However, after clicking on the error alert, the language seems to load correctly.
This is a Hardy Heron Alpha 4 updated untill yesterday.
Cheers.