ASIO MBox Driver Not Working!?

[Markus7]

I am using an Avid Mbox 2 (which I bought with Pro Tools 9) with Propellerhead's Record 1.5. Under the audio preferences menu in Record 1.5 , the audio driver that I used (because it stopped working) for recording audio and playing back audio is listed as "ASIO MBOX ASIO." It worked fine for a month and then randomly stopped working one day, meaning that I cannot select this driver anymore from the list (a read X appears next to it instead of the normal green checkmark). My ASIO driver was the only driver that allowed me to record audio ( the other ones "DX Mbox" and "MME" only playback but not record audio). What I mean is that I cannot assign an audio track to my Mbox to record vocals from the other drivers(don't know why). I don't even understand what ASIO is and is there a place where I can download the latest driver or something? There is nothing wrong with my MBox or my DAWs. Why would the ASIO driver suddenly stop working?