Mac Mini late 2012
Processor 2.3GHz Intel Core i7

Blender Version
2.78a

Short description of error
Non responsive middle mouse button for rotation view.

Exact steps for others to reproduce the error
I don't really know how to tell you how to reproduce the problem because it appears that no one else has it. What has happened is the middle mouse button no longer rotates, pans, or zooms (when holding shift or ctrl of course). I've done extensive research online and testing of my equipment to make sure it wasn't something simple. And it appears to be a software glitch. I've uninstalled and reinstalled, rebooted system multiple times, tested my mouse to make sure it's working properly, and triple checked all the 3D view setting to make sure it's all as it should be ( back to factory settings ). I'm at a loss of what to do, I can't move around my model anymore without the numbed which slows projects to a crawl.

Thanks