Can DAQmx regeneration cause 200019 error

I am using a 6230 DAQ card to output a continuous analog (AO_0) tone of varying levels.  The problem is that I am trying to use the same card (AI_0) to sample the data and keep getting error -200019 (Measurements: ADC conversion attempted before the prior conversion was complete).  I have tried to adjust the sample rates and can't resolve the issue.  Can the DAQ card sample while outputting a continuous tone with regeneration disabled?
NI DAQmx: Continuously Generate Waveform - Non Regeneration - Rapidly Updating - WEB Link: http://zone.ni.com/devzone/cda/epd/p/id/370
Matthew Fitzsimons
Certified LabVIEW Architect
LabVIEW 6.1 ... 2013, LVOOP, GOOP, TestStand, DAQ, and Vison

Is the AI being hw-clocked at all or is it a software-timed on-demand reading?  Can you post a screenshot of the task config and write/read code?
I've used M-series boards for multiple simultaneous tasks before and they have typically behaved fine. 
Odd question:  any chance that the AO task is producing an uncaught error that ends up causing the AI error?  Your setup sounds like one where
*AO* errors would be more likely due to the timing needs of updating the non-regenerating buffer.  It's otherwise hard for me to picture how you'd
get the opportunity to attempt a 2nd AI Read before the 1st has finished.  You don't have multiple parallel attempts to do on-demand AI Reads, do you?
-Kevin P.

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