Mbox 2 malfunction in Pro Tools 11

[Desolis]

Hi, I have worked in my Mac for the last few years (currently OS Sierra V 10.12.6) with Pro Tools 10.3.5 and as it was working correctly, I did not installed the latest versions. A few months ago, PT began to give some minor errors until about a month ago when my Mbox 2 Mini stopped recording: The program identified it well as a Playback Engine but did not pick up the input signal.
Thinking that perhaps updating to a later version the problem would be corrected, I installed the version 11 but if I select the Mbox as Playback Engine when activating Play (both in playback and recording mode) the Stop is activated automatically and in the lower part "Pause" appears, however, if I select Pro Tools Aggregate as the Playback Engine, it works correctly. I´ve tried the follow solutions without success: I have installed version 12, I’ve reinstalled the Mbox driver, I have increased the size of the buffer successively to 1024, I have disabled the plug-ins, but the problem persists.
Notice that I am not very expert in rare terms.
Thanks in advance to those who can help me and my excuses for my basic English. I´m from Spain!
Desolis

[gegu31]

Hola. Soy de Chile y pasé por situaciones similares. Ojalá esto te sirva.
Trata de desinstalar los drivers de la Mbox 2 manualmente y reinstalar los nuevos drivers. Revisa este link http://avid.force.com/pkb/articles/e...Mbox-2-Drivers A mí, personalmente, me ha funcionado bien con los drivers 10.3.3 (revisa la lista del link). Ah, y debes conectar la Mbox a un hub usb (el hub es un dispositivo con varios puertos usb, su valor es habitualmente bajo en el mercado, 10 euros o menos en tiendas especializadas).

Saludos,

Germán González.