Jing currently requires Microsoft's .NET Framework 3.0 or higher. In the next couple of months or so, when the next Jing release comes out, if you don't have .NET 3.5 SP1 (service pack 1) or higher, you'll be prompted to install it before you can upgrade and use Jing.

One way I check to see if I already have .NET 3.5 SP1 on my computer is to use the Add/Remove Programs feature in the Control Panel and see if it's in the list. Here's what it looks like on my machine: http://screencast.com/t/NWNjYjQxZ

If you'd like, you can get the .NET upgrade in advance. In fact, it should be a recommended suggestion from Microsoft if you ever use their Auto Update or www.windowsupdate.com process. You can also download it directly from here.

This higher .NET requirement is important for a number of reasons including better Jing performance, the ability to leverage some nice features Microsoft has made available, and improvements that let us develop Jing faster.

We appreciate your understanding and hope you'll spread the word if you can. Thanks!