Hi Austin,
You need to understand, The fix for this issue is RU7 .
what ever work around you try the issue might arise again...
IT seem it is BUG in SEP. Most of them would have escalated the issue .
They have fixed the BUG in the next upgrade.
My suggestion is to Upgrade completely to RU7 or Upgrade those Machines alone right now to fix the Issue.
It is possible to upgrade those machines alone...