Hi,
Looks like the function that is missing DIG_TRIGGER_CONFIG has to do with the data acquisition part of your program. It is possible that the files for the driver were the ones that have been deleted.
I recommend that you download the driver and try to reinstall it; if the missing functions are DAQ functions that should fix the problem.
You can find the lattest version of the driver here:
NI-DAQ Version 5.0.5 for Windows 3.1/95/NT.Good Luck.
Regards,
Juan Carlos
N.I.