Well, it turns out that our tester misdiagnosed part of the problem with our software due to a bad interaction with a VM machine, so I needed to do a two line fix to a pair of files to fix the issue. Which I've done.
Unfortunately, the consensus now seems to be that it's too late to get the fix in for this release. *sigh*
Unfortunately, the consensus now seems to be that it's too late to get the fix in for this release. *sigh*