Trying to read multidevices in an array of tasks

Hi,

Because of getting this error: "One or more devices do not support multidevice tasks.", I am trying to use an array of tasks to be able to read multiple devices, as suggested by GregFreeman in the following link:

http://forums.ni.com/t5/LabVIEW/One-or-more-devices-do-not-support-multidevice-tasks/td-p/2608285

But the problem is that I still get another error, which is :

NIDaq Error  in DAQmxStartTask code -89121 Destination terminal to be routed could not be found on the device.

Here's my code:

for (int i = 0; i < nCh; i++) {

   niStat = DAQmxCreateTask (tName, pTH);

   niStat = DAQmxCreateAIVoltageChan(*pTH, chanName, "", myConfig, rLo[i], rHi[i], DAQmx_Val_Volts, NULL);

   niStat = DAQmxSetAIRngLow(*pTH, chanName, rLo[i]);

   niStat = DAQmxSetAIRngHigh(*pTH, chanName, rHi[i]);

   niStat = DAQmxCfgInputBuffer (myTasks[t], (int) sampRate);

}

niStat = DAQmxCfgSampClkTiming(myTasks[0], "", sampRate, DAQmx_Val_Rising, DAQmx_Val_ContSamps, sampRate);

for (int t = 1; t < nTasks; t++) {
    niStat = DAQmxCfgSampClkTiming(myTasks[t], "PFI1", sampRate,DAQmx_Val_Rising, DAQmx_Val_ContSamps, sampRate);
}

niStat = DAQmxExportSignal(myTasks[0], DAQmx_Val_AIConvertClock, "PFI1");

for(int t = 0; t < nTasks; t++) {
    niStat = DAQmxRegisterEveryNSamplesEvent(myTasks[t],DAQmx_Val_Acquired_Into_Buffer,buffSamps,0,EveryNCallback, NULL);
}

for(int t = 0; t < nTasks; t++) {
    niStat = DAQmxRegisterDoneEvent(myTasks[t],0,DoneCallback,NULL);
}

for(int t = 0; t < nTasks; t++) {

    niStat = DAQmxStartTask(myTasks[t]);

}

I would be very grateful if you could help me. 

Thanks.