The Integrity plugin places files into the sandbox that are in state "pending-add".
When using transactional changepackages or the changepackage review process, this will often break builds, as the pending files often depend on pending checkins to existing files (for which the Integrity plugin will download the member rev, not the pending rev).
Basically, the behavior of downloading pending-add members results in inconsistent configurations.

The attached patch will fix this problem.