A great concept - and I'd really like to see a usable version of it.
0.2.0.0 crashes on both of my systems upon excecution, with a .NET framework error message.
The older 0.1.4 beta will load - but when you bring the menu up, the screen goes black (aside from the menu.) If I turn on transparency it freezes the entire system when it tries to draw the menu.
Oddly, at the default sizes, the first ring of the menu takes up nearly 3/4 of my notebook's 1024x768 screen. Oy. I think I saw options to make it smaller the one time I was able to get the config up.
Still, this is one to watch, especially if you can make it SMALLER so that it's, well usable.
EDIT: Played with it more. Edited the config to turn off transparency, and then went in again. Yeah, you can make the icons smaller from the default 128. I turned them down to 32 (though they were actually more about 24 at that setting,) and it works with transparency. Just -VERY- slowly. Might help to turn off the animations and such - but still, like I said, one to keep an eye on as it's developed and matures.

I like the concept - I used to use the circular right-click menu with Mozilla - very slick.
[Message Edited]