I can see my image in a very small square but when I click on it to view I have a yellow banner open on the top of my web browser saying  the page requires a 32 Bit Plugin.  What is this and how do I get it?

KTMRider

Hello, KTMRider, 

Yes, the Photosynth viewer is currently a Silverlight app and the Silverlight web browser plugin is 32-bit only. 

Usually it is only Firefox on Mac that throws a fit about this. If you use Safari or Chrome, you shouldn't have to deal with yellow bars and I don't know of any browser on Windows that pesters you in this way.

With Firefox for Mac, once you restart the browser in 32-bit mode, it can run the 32-bit plugin and run the viewer.