Middle Click on mouse doesn't work anymore

Thank you. I will try that now. I was just hoping I'd be able to fix this without downloading anything, since it worked fine on an older model (still running an intel chip).

Ok, I installed the mouseworks application and I can now modify the middle-button. It still does not do what I want it to do. The best I can do is set it to scrolling so when I click the mouse, it scrolls up and down along with the mouse. The only part I don't like is I have to keep moving the mouse in order for it to scroll, whereas before I had only to move the mouse up once and it would continue to scroll up. Has anyone else had middle-button mouse problems with the new 13 inch pro?

I contacted them. The name of the feature is auto scrolling. They told me the feature is not, and has never been, available on a Mac. I find this odd since the feature worked just fine on my old macbook. Anyway, I guess that puts an end to it. If anyone knows of another way to make the auto scroll feature work, it would be awesome to know. If not, than I guess nothing can be done.

Yup, that did it. Thanks!

Note for anyone else who wants to use it: this is the evaluation copy only and you will have to purchase the program.