You can find more information about this warning in this article
. It basically means that OpenAccess is unable to track changes within object arrays (in this case a byte array), unless the whole array is replaced with another.
However, this warning should not prevent your project from building, everything should work as expected, so you can just ignore it.
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!