Hello;
You shouldn't have any problem on installing both DAQ devices together on the same machine.
Try the installation of one DAQ device at a time, and make sure it passes the resource test before you install the second device.
Also, uninstall whatever version of NI-DAQ you have installed on that machine, download the latest available version (6.9.3) from NI web site, and install that version of the driver.
Try the 1200 on different slots of the same machine, and ultimately, on a different machine to test the hardware itself.
Do the same for the Lab-PC board.
Hope this helps.
Filipe A.
Applications Engineer
National Instruments