i think you have to reload the daq too, otherwise the channel count and datarate of the daq (rt model running) is different from the one of the daqd expects to find. They use a shared memory to exchange data. If think you don't reload the daq the amount and order of data/channels exchanged is different from what the daqd expects to find in the shared memory (and maybe in which order). We should ask alex if this is true..

You can find that button in the upper left corner of the main medm screen for your subsystem.  The last time we had this issue i reloaded the daq, reloaded all filters and coefficients (which both i think are not necessary) and then restarted the daqd by using sudo pkill daqd and everything worked fine.  That's how did this all the time with the psl subsystem and i never had problems with getting data from that...