I loaded the new code and now when Mach4 starts up it displays the progress bar for loading screen elements, and about half way done it hangs. There is a ghost of a message box over the progress bar, centered in the screen, so one of your messages tired to show.
Drivertest runs ok
I am going to take my PC up to Brians shop on Friday, I will get him to see whats happening.
Thanks for your help