I've also had 2 users both from the UK in the last couple of days having possibly similar issues. It appears the old version of DVRMSToolbox that is hosted here no longer supports some recordings with RU2.
You can download the latest version of DVRMSToolbox from
here.
When I get the time I will update the version we host here as well to make sure no one else suffers the same problem.
Then again. It could just be a bad recording as Matt suggests
Cheers,
Arkay.