HI ODRulz
So far we use the traditional NIDAQ-driver in all outrsystems. So everything I wrote is only valid for DAQ the trad. NIDAQ-driver. I'm really sorry, that I can not help you with the DAQmx stuff. I know that the remote access with the RDA-Server works only with the trad. NIDAQ-driver and does not work with DAQmx.
May be you start without a remote connection and try to get your app running on you PXI system and move in a second step to the remote connection.
Christian511