Widget
I've been having some trouble getting a Mac Dashboard widget I've been working on to install.
It turns out that you need to have an image of the entire Widget saved as Default.png in the package. This image is shown if your widget is taking time to load. In the Widget Development Documentation it seems to fail to tell you this one small point and I had to find it elsewhere.
Anyway, I've got the basic prototype working, and I would upload it here for all to look at, but it seems as though Movable Type disagrees with the .wdgt file extension...