task cannot be made the active task; task is not ready or running

    Facility: DEBUG, VMS Debugger

    Explanation: The task specified to made the active task is not in
    either the READY nor the RUNNING state. Tasks not in those states
    cannot be made the active task. To determine the state of the
    task, perform a SHOW TASK command.

    User Action: If the task is in the TERMINATED state, no action
    is possible. If the task is in the SUSPENDED state, the action
    required to get the task in the READY or RUNNING state depends on
    the user program and the state of the debugging session.