Erros and translations

Hi, lads!

I'm having a few issues with this plug in.

First: can't make the translated mo file works... the language inj the wp-config is set to es_ES for spanish... I've tried this different combinations for renaming the plugin mo file, but none of theme works:

http://cl.ly/37272T0H2y0b1W3W2M1X

Buy the way, in the po file couldn't find the string for translate "sigin with twitter" and "signin with facebook"

Second:

All ready configure the settings and introduce the api keys and secrets of facebook and twitter, but when I push the sing in with button, errors apears.

In facebook: http://cl.ly/3D1n2O1b3e3Q0y2D1A1d

and in twitter says that there are no token... the url I'm using is the one sugested by the plugin http://www.sitiosguau.com/mastersetup