hello fkantz,
as you can see here, the M-Series only work with NI-DAQmx: http://www.ni.com/support/daq/versions_pci_pxi.htm
There are Copatibility VI's, which allow you to use Trad.DAQ VIs with new DAQmx devices (http://digital.ni.com/softlib.nsf/websearch/9D67F671BCC6850586256E630059308B) but you can't use a DAQmx device (like the M-Series) with older driver.
greets