I keep getting the 339 error when i try and install and open the radian software. I have tried this on about 5 different computers now, one of which is brand new so it seems that it is a problem with the software rather than the computer. what do i do? shouldn't the radians come with the software on a cd or something??.. or at least instructions in the manual of how to download the software? Could any answers/ explanations be made very simple and easy to understand, as you can tell i'm a bit of a computer noob.. (only just learned what a zip file is) Many thanks!