Site importer crashes Dreamweaver

I'm using Yosemite on a Mac, along with DW CS6. I tried to figure out what version of Site Importer I have installed and can't figure out how to open the Extension manager to check it. In the thing that I can click on the very top of my screen that shows my Adobe apps, it shows that I have installed both Extension Manager CC and Exchange Panel for CS6 Apps install, but neither shows up on my launchpad, so I don't know how to launch them. In older versions of DW, I knew how to launch the extension manager from DW, but that doesn't seem to exist any more.

Suggestions?

To open the extension manager, you can can go to Commands -> Manage Extensions in DW CS6.

Site Import is a part of the Design Extender extension. We are in the process of evaluating extensions for compatibility with Mac OS Yosemite, we will be putting out updates to address compatibility issues with our current extensions in the near future.

I just downloaded Site Importer 1.2, hoping you'd fixed the problem that it crashes Dreamweaver CS6 on Yosemite, which has been updated. Still crashes. Really wishing I had the use of Site Importer.