After getting inspired at the Developer's Conference from all the great seminars presented by Selwyn, Dan, Jerry, et. al., I wanted to get up to date on the browser and in starting to view the above-referenced tutorial, I downloaded the component and font files and installed them as recommended, but when I went to ran them I got a rather indecipherable error.

In looking at the settings, I saw in the Properties|Local Storage section a setting for Working Preview Folder for Local Storage Testing and it had hard-coded Dan's (apparently) directory on his computer, which obviously didn't exist on mine.

After setting that value to a valid directory on my computer all is well with the world ...

Just 12 minutes into the video, though ...

Thanks to everyone at AA and the folks who demonstrated their personal applications, a very impressive conference ...