It looks like you've created three tasks that all talk to AI on the same device. You should instead create a single task which reads from all three channels at the same rate. You can specify a range of channels with the string "Dev1/ai0:2".
As for the "Resetting VI - USB92XX bulk reader.vi" message, the "USB92XX" refers to an internal VI which controls both the USB-92xx and USB-600x devices. Also, you should probably not hit the abort button as it may leave the device in a bad state. If you end up hitting abort and get that "Resetting VI - USB92XX bulk reader.vi" message, simply unplug the USB device and the driver will reset.