Measure: Task cannot be stopped, because at least one installed event handler has not been removed. Remove all installed event handlers by calling CNiDAQmxEvent::RemoveEventHandler or CNiDAQmxEvent::RemoveAllEventHandlers. See the documentation for more information. Measure: An analog output channel string represents multiple analog output channels. Measure requires that each analog output channel string contain only one analog output channel. Measure: Excel is out of memory. Use a smaller range. Measure: The range that is specified in the task's configuration is not valid. Measure: The worksheet that is specified in the task's configuration does not exist. Measure: Unable to find task.