Hi it is this that it terminates the program
mc.mcSignalWait(inst,mc.ISIG_INPUT7 ,1,0)
But I also tried
mc.mcSignalWait(inst,mc.ISIG_INPUT7 ,1,4)
it then terminates with a error -40 a time out error so I believe there is some thing wrong with the way it gets the input or actiually fails to get the input
I copied the machipc.dll from the version of mach4 where is works but it made no difference I have now put back the correct machipc.dll they are 2 different date stamps and file sizes
Regards Ray