I am unfamiliar with "Capture Movies" and "SUI Image Analysis SW" - I assume that these are LabVIEW programs which have been written and contain the IMAQ Copy.vi. The error code you refer to has the description:
NI-IMAQ: The requested buffer has been overwritten and is no longer available.
You can find error codes explanations by going to Help >> explain Error . . under LabVIEW.
I don't know what your code is doing, but perhaps, somewhere you are trying to access a image buffer number that has been overwritten. You mentioned that you set the max buffers to 32767 - do you really have enough memory in the system to set that many buffers up? A 8-bit 640x480 image is 307kb. 32767 of these would be 10 gigabytes! If you start to setup more image buffers than can be stored in RAM, Windows will start to push those buffers to disk. Accessing disk space is very slow. Make sure that your buffers only stay in RAM (Windows will only allow you to access ~%50 of the total RAM available).
I would also suggest to upgrade to NI-IMAQ 3.1.2 since it has improved memory allocation abilities.
ftp://ftp.ni.com/support/imaq/pc/ni-imaq/3.1.2
Hope this helps - good luck with your project!
