simpson36,
Can't speak for Lee but will give some suggestions.
1. Is it the controller working in windows? Check Windows Control Panel>Game Contollers and see what the status is. Activate it before doing the check. Would assume it should say OK. I am using the wireless but i know someone that is using the XBOX 360 usb and has no problems that I'm aware of. I'll see if I can get in touch with him.
2.In the directory where Mach3 is installed, Mach3>PlugIns see if the DLL file is there. You may want to check
using Windows Seach for the file name XBox360Controller.dll and see how manny versions you have on the computer, get rid of all of them, and reinstall the Dll again.
3. You probably know this, but, remove the Joystick and ShuttlePro dll's from the PlugIns's directory, then
you only have one controlling device and Enable / config the Xbox contoller.
Again, I'm using the wireless , have used it in 3.042.020, .024, .027, can't speak for Lee.
FWIW,
RICH