OK - so what is the specific error it is complaining about?

Also - you're saying that if you run the DIC over and over again, it sometimes reports and error and it sometimes doesn't? You IT guy needs to explain how the same program faced with the same data reports different results without there being an intermittent hardware problem.

To see whether it is somewhere in your network, copy your data to your local drive C: and run the DIC on the local copy. See if you can get the data to fail there.