Strange IMAQ Error Message: "ni: A frame has been dropped and the acquisition has been canceled."

Hello,
I am getting a strange error trying to use the NI PCIe-1427 with the MATLAB image acquisition toolbox configured with continuous acquisition.  After about 5 minutes of acquisition, I get the error below:
??? ni: A frame has been dropped and the acquisition has been canceled.
Does anyone have any clues as to why I am getting this error / where I can find out what causes it?  I need to acquire several hours worth of data and this error completely aborts my acquisition.
  --Y

Hello,
Turns out that I found the problem.  I had a slow memory allocation in my MATLAB code and this delay allowed too many frames to be accumulated in memory.  I still do not know the source of the exact text of the error, but upon removing the slow memory allocation the error no longer occurs.  I believe that it may have resulted from a buffer overrun of some sort in the underlying driver.
Given that this no longer poses a problem for me, I will not pursue it further.
Thank you for your help!

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