Description
ADS> User-defined function error.
John> Or prehaps you added a FNwhatever to a running program.
Common causes
ADS> Save the program as source and reload it as source. If the error persists, call your dealer or ADS for help.
John> Well you're just gonna have to STOP the program add the Library "Core\Library": FNwhatever line to the program and then it should work.