EXPLANATION This message should occur only on a down-level computer. Any action to correct the problem should be performed ...

EXPLANATION    This message should occur only on a down-level computer. Any action to correct the problem should be performed on that computer.  You used the AT utility to specify a program that could not run.    ACTION    Check the filename of the program you tried to schedule. If it is in a directory that is not on the computer's search path, be sure to specify its full path.    Be sure that all programs you schedule are executable.