Hi Vadim
before I installed the NI-DAQ 6.6, I removed the older version (6.5) in the
start/settings/control panel/software
menue.
That worked perfectly.
If you have already mounted the 1200 take it out again and remove it from
the
start/settings/control panel/system
menue
(it might be installed as a different device, if you mounted it before you
installed the NI-DAQ)
good luck,
Michael