So I decided to see what other integer values might cause a similar failure. I set up a temporary loop on the SLC that increments an integer and then writes that integer to the V570. It then tries to read that value back from the V570. If it is unable to read the same value after 3 seconds, it stores the number. So far the numbers that will cause the message to fail are 16,272,528,784,1040,1296,1552,1808,6064,2320, and 2576. I've only been able to get enough alone time with the machine to check through 2600, but there is already a clear pattern developing here. I just don't know what it means.