Hi Donna,
Does the same thing happen with example projects, or only this one project? Some offhand ideas would be to try increasing your virtual memory size, defragging your hard drive, or restarting the computer to clear the cache. It may be that the OS sometimes cannot find a page with enough memory available. It may also be an unhandled memory leak. Can you narrow down your code to its simplest form and reproduce the error? If so, post that version of the app and I'll be happy to take a look at it! Thanks!
Jeremy L.
National Instruments