Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
To start with, can you tell me the full name brand and model of your neat scanner, as there are several different models.
Also, are you able to locate the neat application and open it on screen?
And one more thing. Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.